| 51008 | c740 | A | GCHD 1 | Galveston County Health District 1 | Public Works |
| 51040 | c760 | A | GCHDAnmlCtrl | Galveston County Health District Animal Control & Texas City Shelter | Public Works |
| 51104 | c7a0 | A | GCHD Admin | Galveston County Health District Administration | Public Works |
| 51472 | c910 | A | GCHDEMS1Disp | Galveston County Health District EMS Ch. 1 Dispatch | EMS Dispatch |
| 51504 | c930 | A | GCHDEMS2Talk | Galveston County Health District EMS Ch. 2 Talk | EMS-Talk |
| 51536 | c950 | A | GCHDEMS3GMT1 | Galveston County Health District EMS Ch. 3 "GMT 1" | EMS-Tac |
| 51568 | c970 | A | GCHDEMS4GMT2 | Galveston County Health District EMS Ch. 4 "GMT 2" | EMS-Tac |
| 51600 | c990 | A | GCHDEMSGMTAd | Galveston County Health District EMS GMT Administration | EMS-Tac |
| 54480 | d4d0 | A | GCHDEMS-UTMB | Galveston County Health District EMS Patient Reports to UTMB John Sealy Hospital in Galveston | Hospital |
| 55504 | d8d0 | A | GCHDEMS-MMC | Galveston County Health District EMS Patient Reports to Mainland Medical Center in Texas City | Hospital |
