| 38 | 026 | D | HC PHES 3 | Public Health and Environmental Services 3 | Public Works |
| 121 | 079 | D | HC AnmlCtrl1 | Public Health and Environmental Services - Animal Control Dispatch 1 | Public Works |
| 407 | 197 | D | HC FM 1 | Fire Marshal 1 | Fire-Tac |
| 521 | 209 | D | HarrisCo EM1 | Emergency Management 1 (HFD Ch. CA15) | Emergency Ops |
| 533 | 215 | T | HC ME Disp 1 | Medical Examiner - Dispatch 1 | Public Works |
| 643 | 283 | D | HC ME Backup | Medical Examiner - Back-up | Public Works |
| 685 | 2ad | D | HC CntywdEMS | Countywide EMS (patient reports to San Jacinto Methodist Hospital; HFD Ch. CA2) | Hospital |
| 687 | 2af | D | HC Cntywd FD | Countywide Fire | Fire-Talk |
| 753 | 2f1 | D | HC Attorney1 | Attorney Ch. 1 | Law Tac |
| 805 | 325 | D | HC ISD PD Tac | Independent School District Police Tactical | Interop |
| 815 | 32f | D | HC Attorney2 | Attorney Ch. 2 | Law Tac |
| 1041 | 411 | D | HC FM 2 Adm | Fire Marshal FM 2 Administration | Fire-Talk |
| 1171 | 493 | D | HarrisCo EM2 | Emergency Management 2 | Emergency Ops |
| 1173 | 495 | Te | HarrisCo EM3 | Emergency Management 3 | Emergency Ops |
| 1177 | 499 | D | HC FM 3 Tac3 | Fire Marshal FM 3 Tactical 3 | Law Tac |
| 1187 | 4a3 | D | HC AnmlCtrl2 | Public Health and Environmental Services - Animal Control Dispatch 2 | Public Works |
| 1214 | 4be | D | HC PHES 2 | Public Health and Environmental Services 2 | Public Works |
| 1257 | 4e9 | D | HC FM 4 HM | Fire Marshal 4 Hazmat "HM 4" (HFD Ch. CA4/DC9) | Fire-Tac |
| 1281 | 501 | D | HC PHES 1 | Public Health and Environmental Services 1 | Public Works |
| 1367 | 557 | D | HC ISD MA | Independent School District Mutual Aid | Schools |
| 1962 | 7aa | D | Harris Co PSAP | Public Safety Answering Points (inter-dispatch center coordination) | Interop |
| 2037 | 7f5 | DE | HC FM 5 HM | Fire Marshal 5 Hazmat | Fire-Tac |
| 2209 | 8a1 | D | HC FM Tac 7 | Fire Marshal Tactical 7 | Law Tac |
| 2539 | 9eb | D | HC EOC-EOC | Emergency Operations Center (EOC) to Emergency Operations Center (EOC) | Emergency Ops |
| 3762 | eb2 | D | HC FM Tac 6 | Fire Marshal Tactical 6 | Law Tac |
