The Cook County Sheriff's Police 911 Center currently dispatches for:

10220 South 76 Ave, Bridgeview, IL 60455 County animal control center, used for Animal Rescue activities at various locations in the County.
*Animal Control Center Ops [0002339434 Dismissed by FCC]  was 461.0375, 461.0625 (unknown to be in use)

* WPVV610 UHF repeaters at Brookfield Zoo - see "Brookfield Zoo" subcategory at  http://www.radioreference.com/apps/db/?aid=1913
* WQBB200: 451.025, 456.025 - 2w mobiles, NBFM voice and data

* See wiki page for additional information

- CPD Zones are in the process of switching from analog to encrypted P25.

- 460.500 (former Zone 5 frequency) still licensed, future use (if any) unknown.

154.220 -  VHF Admin simplex and extra alarm / incident notification [call-out] (notifications from OEMC on all extra alarms, EMS plans and other major incidents)

Chicago Fire Department
Chicago is divided into 2 dispatch areas:  Main (North) and Englewood (South).  The south branch of the Chicago River / Sanitary Ship Canal (which runs just north of I-55 / Stevenson Expressway) is the dividing line.   North of the canal – Main, south of the canal - Englewood. 

System Diagram FCC Acrobat Document

Snow Command operations roughly parallel the above and will be heard primarily on channels 1, 7 and 8. Channels may also be referred to as "Fleets". Some systems/radios may have channels 1 & 7 reversed.

Also see Soldier Field and Lincoln Park Zoo under Attractions .

The Public Building Commission of Chicago plans, designs and constructs municipal buildings—schools, libraries, fieldhouses, fire stations and more.  The agency is chaired by the Mayor of the City of Chicago.

* See Wiki page for additional frequency information (including Chicago Central Hearing Facility at 400 W Superior).

* Dispatches Police and Fire for Calumet Park, Markham, Midlothian, Posen, Robbins and Sauk Village as well as Dixmoor Police.  See below for Police Dispatch information.
* Calumet Park, Midlothian, Posen and Robbins Fire dispatched on 154.070 DPL271 (MABAS Division 22, repeats 158.8575).  Markham Fire dispatched on 153.890 DPL343.  Sauk Village Fire dispatched on 154.370 203.5 PL.

Operated by Bud's Ambulance, Central Dispatch dispatches Burnham, Dolton and Lynwood Police and Fire Departments.  PDs are dispatched on STARCOM21 encrypted talkgroup(s), FDs are dispatched on 153.890 343 DPL.

Dispatches Police (STARCOM21 encrypted) and Fire (154.190, PL 77.0) for Cicero, Forest View and Stickney (DPL 432 used on 155.970 input).

Also known as Consolidated Emergency Response Center of Cook County (CERC-CC).  See wiki page for more information. 

Net 1, 2, 3, 8, 9a - PDs have moved to the Cook County trunked system.

Net 9 - Markham (300s).  Moved to STARCOM21 TGs 34420 and 34421.

Net 10 - Bedford Park (100s), Willow Springs (300s), Justice (500s), Summit (600s), Hickory Hills (900s).

Net 16 - River Grove (600s), Melrose Park (1100s), and Stone Park (1200s), Franklin Park (8000s). See NORCOMM Public Safety Communications below.

Net 17 - Maywood (100s), Broadview (200s), Bellwood (300s), moved to STARCOM21 talkgroup 25311.

E-Com is located in Homewood; dispatches police and fire for Country Club Hills, East Hazelcrest, Flossmoor, Glenwood, Hazel Crest, Homewood, Riverdale, South Holland and Thornton.  All Police are dispatched on STARCOM21 encrypted talkgroups.  All Fire agencies are dispatched on 151.430 162.2 PL.  Website

See wiki for additional frequency information.

Dispatching for Broadview and Maywood Police, Fire and EMS.  Police are dispatched on STARCOM21 (see below), formerly on 470.4125 (Net 17, 192.8 PL).  Fire/EMS dispatched on 154.370 (103.5 PL).

https://wiki.radioreference.com/index.php/Glenview_(IL)_Public_Safety_Dispatch

South facility (Glenview) provides dispatch services for :

• Glenview Police (SC21 talkgroup 3686 - encrypted)
• Glenview Fire (SC21 talkgroup 3679)
• Glencoe Police (SC21 talkgroup 3687 - encrypted)
• Glencoe Fire (151.010)
• Grayslake Police (Lake County, SC21)
• Grayslake Fire (Lake County, SC21 talkgroup 3679)
• Hainseville Police (Lake County, served by Grayslake PD)
• Kenilworth Police (SC21 talkgroup 3687 - encrypted)
• Morton Grove Police (SC21 talkgroup 3685 - encrypted?) (Sometimes on 470.7125?)
• Niles Police (SC21 talkgroup 3685 - encrypted?) (Sometimes on 470.7125?)
• Northfield Police (SC21 talkgroup 3687 - encrypted)
• Winnetka Police (SC21 talkgroup 3687 - encrypted)

Services for Highland Park, Highwood, Lake Bluff and Lake Forest handled at the North Facility in Highland Park (see Lake County, IL database page).

Dispatches Bedford Park, Hickory Hills and Summit PDs on 470.5875 (156.7) Net 10, Hometown and Summit FDs on 155.5575 (91.5).

* Police: Western Springs (300s), La Grange (500s), Countryside (900s) and La Grange Park (2300s).  Dispatched on STARCOM21 TG 34481 (encrypted), with unencrypted multicast at times on 154.800 (186.2).
* Fire: La Grange (1100s), La Grange Park (1200s), Western Springs (1700s).  Dispatched on STARCOM21 TG 34485 with a patch to 154.250 (146.2).

MABAS Divisions with Cook County Members (see individual communities and dispatch centers for dispatch freqs):

Division 1: Arlington Heights FD, Des Plaines FD, Elk Grove Township FD, Elk Grove Village FD, Hoffman Estates FD, Mount Prospect FD, Palatine FD, Inverness FPD, Rolling Meadows FD, Rosemont FD, Schaumburg FD, Wheeling FD

Division 2: Streamwood FD

Division 3: Evanston FD, Glencoe FD, Glenview FD, Lincolnwood FD, Morton Grove FD, Niles FD, Northbrook FD, Northfield FD, North Maine FPD, Park Ridge FD, Prospect Heights FD, Skokie FD, Wilmette FD, Winnetka FD

Division 4: Barrrington FD, Buffalo Grove FD

Division 9: Chicago FD

Division 10: Brookfield FD, Forest View FD, LaGrange FD, LaGrange Park FD, Lyons FD, McCook FD, Pleasantview FPD, Riverside FD, Tri-State FPD, Western Springs FD, 

Division 11: Berwyn FD, Cicero FD, Forest Park FD, North Riverside FD, Oak Park FD, River Forest FD, Stickney FD

Division 19: Palos FPD, Palos Heights FPD

Division 20: Bellwood FD, Berkley FD, Broadview FD, Elmwood Park FD, Franklin Park FD, Hillside FD, Leyden FPD, Maywood FD, Melrose Park FD, Northlake FD, Norwood Park FPD, River Grove FD, Rosemont FD, Schiller Park FD, Westchester FD

Division 21: Bedford Park FD, Bridgeview FD, Burbank FD, Central Stickney FPD, Chicago Ridge FD, Evergreen Park FD, Hometown FD, North Palos FPD, Oak Lawn FD, Roberts Park FPD, Summit FD 

Division 22: Alsip FD (2000s), Blue Island FD (2100s), Calumet Park FD (2200s), Crestwood FD (2300s), Garden Homes FPD (2500s), Merrionette Park FD (2600s), Midlothian FD (2700s), Posen FD (2800s), Robbins FD (2900s)

Division 24:  Burnham FD, Calument City FD, Country Club Hills FD, Dolton FD, East Hazelcrest FD, Flossmoor FD, Glenwood FD, Harvey FD, Hazel Crest FD, Homewood FD, Homewood Acres FD, Lansing FD, Lynwood FD, Markham FD, Munster (IN) FD, Oak Forest FD, Phoenix FD, Riverdale FD, South Holland FD, Thornton FD, Tinley Park FD

Division 27: Chicago Heights FD, Ford Heights FD, Matteson FD, Park Forest FD, Richton Park FD, Sauk Village FD, South Chicago Heights FD, Steger FD, Steger Estates FD, University Park FD

NORCOMM Public Safety Communications is owned and operated by Superior Ambulance Company, which provides EMS service for several area communities as well as private ambulance service. They also serve as MABAS Division 20 and staff dispatch centers in other communities. Not to be confused with Norcom, a shared infrastructure police network in the north suburbs.

NORCOMM dispatches for the following agencies:  Bellwood, Elmwood Park, Franklin Park, Melrose Park, River Grove, Rosemont and Stone Park (both fire/EMS and police) as well as Elk Grove Township, Leyden and Northlake Fire Protection Districts.

470.4125(192.8) Net 17a - former Police Dispatch for Bellwood (300s), now on STARCOM21 encrypted talkgroup 25311 (Net 17).

470.825(192.8) Net 17b - former(?) tactical comms for Net 17a agencies.
**All former Net 17 PDs also have access to the old Net 17 side (155.640).

471.2375(146.2) Net 16 - Police Dispatch for Franklin Park (8000s), Melrose Park (1100s), River Grove (600s) and Stone Park (1200s).
**All towns in this group have a shared channel, "old band"-155.49. Used for C-C by area departments.

MABAS Division 20:

Bellwood Fire Department - 600s (BLWD) - Dispatched by Norcomm on 154.370
Bensenville Fire Protection District - Stations 107 & 108 (BENV) - Dispatched by Addison Consolidated Dispatch Center
Berkeley Fire Department - 300s - Dispatched by Cook County on 154.370
Broadview Fire Department - Station 7 (BRDV) - Dispatched by Eisenhower Emergency Communications "Ike 911" on 154.370
Elmwood Park Fire Department - 900s - Dispatched by Norcomm on 159.120
Franklin Park Fire Department - Engine 1, Engine 2, Engine 3, Ladder 2 or Truck 2 (FRPK) - Dispatched by Norcomm
Hillside Fire Department - 400s (HLSD) - Self-dispatched on 154.370
Leyden Fire Protection District - 130s (LEYD) - Dispatched by Norcomm on 154.370
Maywood Fire Department - 500s (MAYD) - Dispatched by Eisenhower Emergency Communications "Ike 911" on 154.370
Melrose Park Fire Department - 700s (MLPK) - Dispatched by Norcomm on 154.370
Northlake Fire Protection District - 800s (NTLK) - Dispatched by Norcomm on 154.370
Norwood Park Fire Protection District - 100s (NOPK) - Dispatched by Municipal Consolidated Dispatch (MCD) on 154.370 (covers Norridge and Harwood Heights)
Park Ridge Fire Department (PKRG) - Dispatched by RED Center
River Grove Fire Department - 560s (RVGR) - Dispatched by Norcomm on 154.370
Rosemont Fire Department - 150s (RSMT) - Dispatched by Norcomm on STARCOM21 talkgroup 35130 w/patch to 154.340 legacy channel
Schiller Park Fire Department - Station 5 (SHPK) - Dispatched by Municipal Consolidated Dispatch (MCD) on 154.370
Westchester Fire Department - Stations 25 &26 (WEST) - Dispatched by Hillside on 154.370

153.500R - Divison 20 backup repeater if the portables can not raise Norcomm on simplex. Other channels in the line up consist of 153.830 Fireground Red, Superior Direct 155.220(?), 154.265 IFERN for Box Alarms, Fireground White, Blue and Black.

Bellwood OEM 630 is used as the MABAS Division 20 command van.  This is a large RV that that has been redone with radios in the rear and a command area in the front.  Bellwood also has unit 627 which is used as the MABAS Division 20 rehab vehicle.

154.370 Call Outs Everyday Tuesday @ 1800 for pager and alerting receivers.

Stone Park Fire Department - Station 21 (STPK) was disbanded in April, 2020 and is now covered by Melrose Park FD.

Superior Ambulance Website

North Regional Telecommunications Network --- is the organization that owns the radio communications infrastructure for several North Suburban and North Shore PDs.

Glenview Dispatch handles dispatch for Niles, Morton Grove, Glencoe, Kenilworth, Winnetka and Kenilworth on STARCOM21.

UHF operations have ended, all police dispatch is on STARCOM21.

Handles Police and Fire dispatch for Arlington Heights, Barrington, Barrington Countryside FPD, Buffalo Grove, Elk Grove Village, Hoffman Estates, Inverness Police, Inverness Fire Protection District (formerly Palatine Rural FPD), Mount Prospect, Palatine, Mt. Prospect, Prospect Heights Police, Rolling Meadows, Schaumburg and Streamwood.

Wheeling Police and Fire dispatch will reportedly move to NWCD on January 1st, 2025 (1/17/23)

Ops are on STARCOM21, police ops are mostly encrypted, fire ops are not. Traffic is mostly TDMA on STARCOM21 Site 149. 

See wiki page for additional information.

(also see Oak Lawn listing)
*dispatches Police/Fire/EMS for Alsip, Bridgeview, Burbank, Evergreen Park and Oak Lawn.
*dispatches Police for Hodgkins.
*dispatches Fire/EMS for Bedford Park, North Palos and Central Stickney Fire Protection Districts.
*dispatches Fire/EMS for Lyons (1300s) on 154.250 146.2 PL.

Staffing by NORCOMM.

MABAS Division 21 (all dispatched on 155.5575 91.5 PL)
Bedford Park (Battalion 7, 700s), dispatched by Oak Lawn Central Dispatch
Bridgeview (Battalion 40, 400s), dispatched by Oak Lawn Central Dispatch
Burbank (Battalion 2, 200s), dispatched by Oak Lawn Central Dispatch
Central Stickney (900-910), dispatched by Oak Lawn Central Dispatch
Chicago Ridge (Battalion 6, 6500s), dispatched by Southwest Central Dispatch
Evergreen Park (33-50s), dispatched by Oak Lawn Central Dispatch
Hometown (460s, 470s), dispatched by Hickory Hills Consolidated Dispatch Center
North Palos FPD (Battalion 8, 800s), dispatched by Southwest Central Dispatch
Oak Lawn (Battalion 1, 1-3), dispatched by Oak Lawn Central Dispatch
Roberts Park FPD (Battalion 3, 31-32), dispatched by Southwest Central Dispatch
Summit (950s), dispatched by Hickory Hills Consolidated Dispatch Center

Oak Lawn Emergency Communications 
953.55 F Microwave Link WQKI509
957.15 F Microwave Link WQKI508

Fire-only center handling operations for several departments in the south and southwest suburbs.  The dispatch center is at Orland FPD Station 1 in Orland Park. 

Communications for the Combined Agencies Response Team (Trench Rescues), SW Haz-Mat Response Center and MABAS Division 22 operations are also handled by Orland Central.  See Kendall County

Dispatches for the following agencies:
- Country Club Hills FD (13, 14), Orland FPD (1-7), Oak Forest FD (39, 40), Palos FPD (9, 10) on 159.045 DPL 343
- Blue Island FD (2100s) , Garden Homes FPD (2500s), Merrionette Park FD (2600s) on 154.070 DPL 271 (repeats 158.8575)
- Calumet City FD (11, 12) on 154.340 PL 114.8
- Lemont FPD (900s) on 155.385 PL 192.8
- Chicago Heights FD (650-687) on 155.085 PL 156.7
- MABAS Division dispatch for 19 (primary), 22 (back-up) and 24 (back-up).

Orland Park Fire Protection District  Website
*7/11 - FCC modification to WPMQ284:
**add 154.070 base at Blue Island (repeats 158.8575 271 DPL)
**add 159.045 base/mobile at Oak Forest
**keep 159.045, 158.8575R at Orland Park
**add 155.3025 base/mobile at Orlank Park
**delete 159.045 base at Lockport, Mokena, Peotone, Romeoville
Orland Central Dispatch 159.045 DCS 343 is also used for siren activation by DTMF 

 wiki.radioreference.com/index.php/RED_Center

Dispatches for Deerfield-Bannockburn, Des Plaines, Lincolnshire-Riverwoods, Long Grove, Morton Grove, Niles, Northbrook, Northfield, North Maine, Park Ridge, Prospect Heights, Wheeling (moving to NWCD 1/1/25), Wilmette, and Winnetka-Kenilworth FDs and FPDs.

Three licenses (WRTX738, WRTP257 and WRTP258) cover P25 repeaters on 156.135 and 159.660 at 16 different sites.  (8/22)

Dispatches police, fire and EMS for the Villages of Matteson, Richton Park, Olympia Fields and Park Forest, with a population served of 75,000. Matteson FD provides fire protection for Olympia Fields.

The SouthCom Dispatch Center police dispatches Matteson, Olympia Fields, Park Forest and Richton Park PDs on the Cook County Sheriff's Police Department's STARCOM21 south node (encrypted, see below).

A control station transmitter at SouthCom Dispatch Center on 154.6575 is included on the same license (WQBX486) as the 151.3325 fire dispatch repeater.

Located in Palos Heights, Southwest Central Dispatch (SWCD) dispatches several agencies in the southwest Cook County area.  See wiki page for additional frequency information.

Net 7 - Palos Heights PD (1100s), Palos Park PD (1200s, dispatched by Cook County on STARCOM21?), Palos Hills PD (1300s), Chicago Ridge PD (1400s), Worth PD (1600s), Crestwood PD (1700s).

Net 9 - Lemont PD (3800s)

155.190 (CSQ), 158.745, 154.875, 155.145 and 154.025 have been reported for car to car, public works and village administration for many of these communities.

WNYE736 -- FB2s located at Palos Heights (Cook), Lemont (Cook), Willowbrook (DuPage), Mokena (Will)

154.070 271 DPL agencies dispatched: Crestwood FD (2300s) and Palos Heights FPD (6400s)
154.400 agencies dispatched: Frankfort FPD, New Lenox FPD, Manhattan FPD (may not be part of SWCD)
155.5575 91.5 PL agencies dispatched: North Palos FPD (Battalion 8, 800s), Roberts Park FPD (31s, 32s)

Dispatches Police and Fire for Forest Park, Oak Park and River Forest.
Fire unit IDs: 200s River Forest Fire, 400s Forest Park Fire, 600s Oak Park Fire.
Police unit IDs: 1100s River Forest Police, 2200s Forest Park Police, 5000s Oak Park Police
Website

WC3 serves as the PSAP and dispatch center for Brookfield, McCook, North Riverside and Riverside Police & Fire.  Police dispatch is on STARCOM21 (see below) with 155.070 179.9 PL as a back-up.  Fire dispatch is on 154.250 146.2 PL (with 154.265 ((IFERN)) as a back-up).

* WRUN399 - 151.340, repeats 159.105 (new, 9/22)

* Police (700s) dispatched on STARCOM21 talkgroup 36961.
* Fire (2000s) dispatched on 154.070 (D271).
* See Oak Lawn Regional Emergency Communications (OLREC) under 'Condsolidated Dispatch Centers' (above) .

Police, Fire and Local Government using Northwest Central Dispatch (NWCD) - see Condsolidated Dispatch centers (above).
See Wiki page for additional information and frequencies.

Located half in Cook, half in Lake County
* Police (7500s?) dispatched by Northwest Central Dispatch on STARCOM21 (see below).  Formerly dispatched by CENCOM on 470.8125 97.4 PL.
* Fire (45 and 46-series units) dispatched by Northwest Central Dispatch on STARCOM21 (see below).  Back-up is 154.235 (NWCD Fire North).  Formerly dispatched by CENCOM on 153.890 127.3 PL.
* New 9/12 - WQPZ299 - 158.7525, repeats 154.8375 (NFM) for Fire.

Stations 37, 38 and 39. Covers portions of Barrington Hills, South Barrington, Lake Barrington and Inverness; and portions of unincorporated Cook, Lake and McHenry Counties.  They are dispatched by Northwest Central Dispatch on "Fire 1", STARCOM21 TG 2751.  See Consolidated Dispatch Centers (above).

Located in Cook, Lake, Kane and McHenry Counties.
Police ("HENRY" units) is dispatched by QuadCom dispatch (Kane County) on STARCOM21 (see below).  Formerly dispatched on 478.925 127.3 PL.

Fire and EMS coverage provided by Barrington Fire Department and Barrington Countryside Fire Protection District.

*WQSK937 - 453.1625 Repeater (NFM) for Police.

Located mostly in Du Page County with a small section in Kane County

- Police (100s) is dispatched by Hickory Hills Consolidated Dispatch Center on 470.5875 (156.7 PL) Net 10.
- Fire (700s) is dispatched on 155.5575 (91.5 PL), see Oak Lawn Regional Emergency Communications (OLREC) under Consolidated Dispatch Centers (above).
- See wiki page for additional frequency information.

Police (300s) dispatched on STARCOM21 (see below), formerly on 470.4125 192.8 PL (Net 17).  Fire/EMS (600s) dispatched on 154.370 103.5 PL, DHSEM 620s - vehicles, 200s - personnel.  See NORCOMM under Consolidated Dispatch Centers (above).
477.575 (192.8) repeater has been heard.  Presumed to be Bellwood based on tone and FCC license.  Exact usage unknown.

Bellwood agencies have been heard using interoperability repeater VTAC 36 (151.1375, 156.7 PL) to coordinate incident/event operations, etc. (May 2019)

See wiki page for additional frequency information.

Located mostly in DuPage County

Police dispatched on STARCOM21 (see below), Fire (units 350-375) dispatched on 154.370 103.5 PL by Hillside Consolidated Dispatch Center.

Update: the UHF analog frequencies used by Berwyn Police. While they were inactive during the month of August 2021, they are now once again in use. 

Blue Island PD ('2-Lincoln' units) is dispatched by Cook County Sheriff's Office (see below).  Formerly dispatched on 470.7375 173.8 PL.

Fire (2100s) dispatched on 154.070 271 DPL (repeats 158.8575).  See Orland Central Dispatch under Consolidated Dispatch Centers (above).

Police (200s) dispatched on STARCOM21 (see below), formerly dispatched on 470.5875 (156.7 PL) Net 10. Fire (400s) dispatched on 155.5575 (91.5 PL) (repeats 159.3375).  See Oak Lawn Regional Emergency Communications under Consolidated Dispatch Centers (above).

See wiki for additional frequency information.

Police and Fire dispatched by Eisenhower Emergency Communications ("Ike 911", Broadview).  Police (200s) dispatched on STARCOM21 (see below), formerly on 470.4125 192.8 PL (Net 17).  Fire/EMS (Station 7) dispatched on 154.370 103.5 PL.

Brookfield Police and Fire have joined West Central Consolidated Communications (WC3).  Police dispatch is on STARCOM21 talkgroup "Near West 800" (encrypted, with back-up on 155.070 179.9 PL) and fire dispatch is on 154.250 (146.2).

* Located mostly in Lake County; See Northwest Central Dispatch under Consolidated Dispatch Centers
* See wiki page for additional frequency information

Police (800s) dispatched on STARCOM21 (see below), formerly dispatched on 470.5875 (156.7 PL) Net 10. Fire (200s) dispatched on 155.5575 (91.5 PL).  See Oak Lawn Regional Emergency Center (OLREC) under Consolidate Dispatch Centers (above).

Police dispatched by Central Dispatch on an encrypted STARCOM21 talkgroup.  Uses 856.2125 127.3 PL with Calumet City and 155.190 as a tac channel.
Fire (10s, 1000s) dispatched by Central Dispatch on 153.890 343 DPL and also uses 154.355 343 DPL (MABAS Division 24 secondary).

See Du Page County

Fire (11s/12s, 1100s/1200s) dispatched on 154.340 114.8 PL and also uses 154.355 343 DPL (MABAS Division 24 secondary).  See Orland Central Dispatch under Consolidated Dispatch Centers (above).

Police (700s) dispatched by CalComm on STARCOM21 (see below), formerly dispatched on 470.7375 173.8 PL.  May also use 155.190 for aid.
Fire (2200s) dispatched by CalComm on 154.070 271 DPL (repeats 158.8575), also uses 154.355 343 DPL (MABAS Division 24 secondary) and 158.745.

Fire (900-909) dispatched on 155.5575 91.5 PL, formerly on 154.430 91.5 PL. 

* Police dispatched on STARCOM21 encrypted talkgroup; former dispatch 470.4375 203.5 PL is/was an alternate dubbed 'Band 2'.
* Fire (units 650-687) dispatched on 155.085; also serves Olympia Fields for Fire and EMS.  Dispatched by Orland Central.
* See wiki page for additional frequency information.

Police (1400s) dispatched by Southwest Central Dispatch on 470.8625 114.8 PL. Fire (6500s) dispatched by Southwest Central Dispatch on 155.5575 91.5, formerly on 154.430 91.5.
Also uses: 155.025  KKQ299  BM  CSQ   EMA (ESMARN)
 

Police and Fire dispatched by Consolidated Emergency Response Center of Cook County (CERC-CC) in Cicero. 
Fire (1-17-series units) dispatched on 154.190 (77.0 PL). 
Police also use 471.2625 146.2 PL for aid with Berwyn Police. 
ALS EMS Contract by Metro (Superior)
* See wiki page for additional frequency information

Police (800s) dispatched on encrypted STARCOM21 talkgroup.  Formerly dispatched on 470.9375 203.5 PL, also used 470.475 114 DPL Net 3 Priority.
Fire (13s/14s, 1300s/1400s) dispatched on 159.045 343 DPL and also uses 154.355 343 DPL (MABAS Division 24 secondary).  See Orland Central Dispatch under Consolidated Dispatch Centers (above).
155.025 KJB962.

* Police (900s) dispatched by Lyons Township Area Communications Center (LTACC) on STARCOM21 (see below).
* Fire/EMS coverage by Pleasantview FPD (see DuPage County).
* See wiki page for additional frequency information.

Police (1700s) dispatched on 470.8625 173.8 PL; Fire (2300s) dispatched on 154.070 271 DPL.  See Southwest Central Dispatch under Consolidated Dispatch Centers (above).

Located mostly in Lake County . Police patrol by Lake County Sheriff, Fire Protection via Lake Zurich Fire-Rescue.

Located mostly in Lake County

* Police dispatched on STARCOM21 by Wheeling PD Dispatch (encrypted).

* Fire (Stations 61-63) dispatched by RED Center on 155.4375 (225.7 PL).

Dixmoor PD is dispatched by CalComm (see below).
Fire and EMS services reportedly furnished by Harvey FD.

Police (6100s?) dispatched on STARCOM21 (see below).  Formerly dispatched by South Holland on Net 9A 476.3625 D114.
Fire (15s/16s, 1500s/1600s) dispatched on 153.890 343 DPL by Central Dispatch and also uses 154.355 343 DPL (MABAS Division 24 secondary).

Located mostly in Kane County

*Police (500s) dispatched on encrypted STARCOM21 talkgroup (see below), formerly dispatched on 470.9375 203.5 PL.  Also used 470.475 114 DPL, 477.3875 203.5 PL.
*Fire (17s/18s, 1700s/1800s) dispatched on 151.430 162.2 PL by E-COM and also uses 154.355 343 DPL (MABAS Division 24 secondary).

Located mostly in Kane County

Station 11 / 300-series units.  See NORCOMM under Consolidated Dispatch Centers (above).

159.135 WQTJ874 (mobiles) - believed to be used for training

* See wiki for additional frequency information.

Fire Dispatched by NORCOMM on 159.120 D174 (units 940-950)

* Police dispatched on STARCOM21 (see below).  Fire (Stations 21-25).
* See wiki page for additional frequency information

Police (2700s, 2900s) dispatched on STARCOM21 talkgroup 36961 (ENC);  Fire (33-50s) dispatched on 155.5575 91.5 (formerly 154.430 91.5 PL).  See Oak Lawn Central Dispatch under Condsolidated Dispatch Centers (above).

Possible FD mobile extenders on 465.5875

Police (700s) dispatched by E-COM on STARCOM21 encrypted talkgroup.  Formerly dispatched on 470.9375 203.5 PL.
Fire (19s/1900s) dispatched on 151.430 162.2 PL by E-COM and also uses 154.355 343 DPL (MABAS Division 24 secondary).

Patrolled by Cook County Sheriff.  Fire dispatched by Fire District 4 on 154.370 CSQ.

Police (2100s, 2200s, 2300s?) dispatched by WesCom on 154.845 (162.2 PL); also WPCV333 - 154.650 NFM mobiles
Fire (400s) dispatch by WesCom on 159.120 (D174).

*WNCM652 - 154.190 repeater used for dispatch by Cicero, North Riverside and Stickney FDs.

Police (FRANK units) dispatched on STARCOM21 (see below). Fire dispatched on 154.190 77.0 PL.  Both dispatched by Cicero Consolidated Dispatch.

Located mostly in Will County

Police (8000-series units) dispatched on 471.2375 146.2 PL, Fire (400-series units) dispatched on 154.370 103.5 PL.  See NORCOMM under Consolidated Dispatch Centers (above).
See wiki page for additional frequency information.

Police: Patrolled by Cook County Sheriff; Garden Homes Fire Protection District (2500s) dispatched on 154.070 DPL 271.  See Orland Central Dispatch under Consolidated Dispatch Centers (above).

Fire (Station 30) dispatched on 151.010 (127.3 PL) by Glenview.  29-series units too?

Police dispatched by Glenview Public Safety Dispatch on STARCOM21.
Glenview Fire Department (Stations 6-8 and 13-14, also serves Golf) dispatched by Glenview Public Safety Dispatch.
Glenview Park District - WQPL422 152.87 Repeater with 159.72 input (DMR,NFM)

Police (200s) dispatched by E-COM on STARCOM21 encrypted talkgroup, formerly dispatched on 470.9375 203.5 PL.  Also used Net-3 Priority (470.475 D11) and Tac-5 (477.3875 203.5)
Fire (20s/21s, 2100s) dispatched on 151.430 162.2 PL by E-COM; also uses 154.355 343 DPL (MABAS Division 24 secondary) and 154.370 103.5 PL F3 aid.

Police dispatched by Cook County Sheriff (see below).
Fire protection by Glenview FPD on 159.795 D031

The Harvey Police Dept is dispatched on STARCOM21 (see below).  Formerly dispatched on 470.8125.
Fire (35s-38s, 3500s-3800s) dispatched by Harvey Police(?) on 153.890 343 DPL and also uses 154.355 343 DPL (MABAS Division 24 secondary).

Fire by Norwood Park FPD on 154.370 (103.5).  Village licensed for 155.025 (ESMARN, WRTE320)

Police (600s) dispatched by E-COM on STARCOM21 encrypted talkgroup, formerly dispatched on 470.9375.
Fire (27s/2700s) dispatched by E-COM on 151.430 162.2 PL and also uses 154.355 343 DPL (MABAS Division 24 secondary).

Police (900s) self-dispatched on 470.5875 156.7 PL; Roberts Park Fire Protection District (31s, 32s) dispatched by Southwest Central Dispatch on 155.5575 91.5 PL.

Located mostly in Lake County

Police (STARCOM21 talkgroup 25311 ENC, 400-series units) and Fire/EMS (154.370, 103.5 PL, 400-series units) are dispatched by the Hillside Consolidated Dispatch Center.  Emergency Management Agency uses 410- and 420-series unit numbers).

Hinsdale is primarily located in DuPage County with a portion in Cook County.  See the DuPage County database page.

- Police (700-series units) dispatched on STARCOM21 (see below), formerly dispatched on 470.5875 (156.7 PL) NET 10 - See Oak Lawn Regional Emergency Communications under Consolidated Dispatch Centers (above).

- 158.385 (141.3) is used by Hodgkins PD as a car-to-car channel ("Code 3"?).

- Fire/EMS coverage provided by Pleasantview FPD (150-series units),  details under "Districts" on the DuPage County database page.

- Emergency Management (2700s).

- See wiki page for additional information.

* See wiki page for additional infomation.

Police (800-series units) dispatched by Cook County on STARCOM21 (see below).  Formerly dispatched on 470.4625 (141.3 PL); Fire (460s-470s) dispatched by Hickory Hills Consolidated Dispatch Center on 155.5575 (91.5 PL).

Fire (28s/2800s) dispatched on 151.430 162.2 PL by E-COM and also uses 154.355 343 DPL (MABAS Division 24 secondary).

5100s units, operations on 153.890 343 DPL.

Indian Head Park PD (units 4100s) is dispatched on STARCOM21 by Cook County (see below).  Fire protection by Pleasantview FPD, which is dispatched by Addison Consolidated Dispatch Center (ACDC) on 151.2725 (71.9), which is simulcast with STARCOM21 talkgroup 2712.

Fire and EMS for the eastern two thirds of Inverness is provided by Inverness Fire Protection District (Station 36, formerly the Palatine Rural Fire Protection District).  The Barrington Countryside Fire Protection District (Stations 37 and 38) serves the western third of Inverness.  Both are dispatched by Northwest Central Dispatch.

Station 36, formerly Palatine Rural Fire Protection District.  Dispatched on STARCOM21 talkgroup 2751 (Northwest Central Dispatch Fire 1).  Serves unincorporated areas of Palatine Township, Schaumburg Township and and the eastern two thirds of the Village of Inverness.

Police (500s) dispatched on 470.5875 (156.7 PL); Fire by Roberts Park FPD, dispatched on 155.5575 (91.5 PL).  Dispatches for Forest View, Justice and Willow Springs Police and Fire/EMS as well as Roberts Park FPD (as of November 2018).

Fire served by Winnetka-Kenilworth Fire Department on 159.660 D031 (DB: RED Center)