| 3120 | c30 | D | TCISD 1 TCHS | Texas City ISD Ch. 1 - Texas City High School | Schools |
| 3238 | ca6 | D | Htchck ISD 2 | Hitchcock ISD 2 | Schools |
| 3309 | ced | D | GalvISD PD 1 | Galveston ISD Police 1 | Law Dispatch |
| 3311 | cef | D | GalvISD PD 2 | Galveston ISD Police 2 | Law Tac |
| 3313 | cf1 | D | GalvISD Bus 3313 | Galveston ISD Buses | Schools |
| 3315 | cf3 | D | GalvISD Bus 3315 | Galveston ISD Buses (linked to talkgroup 3313) | Schools |
| 3316 | cf4 | D | TCISD 2 BMS | Texas City ISD Ch. 2 - Blocker Middle School and DEAP | Schools |
| 3318 | cf6 | D | TCISD 3 LFIS | Texas City ISD Ch. 3 - Levi Fry Intermediate School and Administration | Schools |
| 3320 | cf8 | D | TCISD Emerg | Texas City ISD - Emergency | Schools |
| 3322 | cfa | D | TCISD Transp | Texas City ISD Transportation | Schools |
| 3324 | cfc | D | TCISD ES | Texas City ISD Elementary Schools | Schools |
| 3333 | d05 | D | SFISD PD 1 | Santa Fe ISD Police 1 | Law Dispatch |
| 3334 | d06 | D | SFISD PD 2 | Santa Fe ISD Police 2 | Law Tac |
| 3375 | d2f | D | LMISD PD 1 | La Marque ISD Police 1 | Law Dispatch |
| 3450 | d7a | D | LMISD LMMS | La Marque ISD La Marque Middle School | Schools |
| 3452 | d7c | D | LMISD LMHS | La Marque ISD La Marque High School | Schools |
| 3456 | d80 | D | GalvCntywISD | Galveston Countywide Independent School Districts | Schools |
| 3557 | de5 | D | SFISD Maint1 | Santa Fe ISD Maintenance 1 | Schools |
| 3559 | de7 | D | SFISD Maint2 | Santa Fe ISD Maintenance 2 | Schools |
| 3561 | de9 | D | SFISD Maint3 | Santa Fe ISD Maintenance 3 | Schools |
| 3563 | deb | D | SFISD Buses1 | Santa Fe ISD Buses 1 | Schools |
| 3565 | ded | D | SFISD Buses2 | Santa Fe ISD Buses 2 | Schools |
