Click on a blue service center name for a map indicating the zip codes comprising that service center's territory. Click here for a printable pdf* file showing the communities served* by each service center.
| SERVICE CENTER | ADDRESS/LOCATION | CITY, STATE ZIP | TELEPHONE NUMBER |
| BAYTOWN | 333 Ward Road (Between Highway 146 and N. Main) | Baytown, TX 77520 | (281) 425-7301 |
| BELLAIRE | 4300 Bissonnet St. (Between Newcastle and Weslayan) | Bellaire, TX 77401 | (713) 945-4201 |
| BRAZOSPORT | 202 W. Highway 332 (From Clute take Lake Jackson exit Hwy 332) | Clute, TX 77531 | (979) 266-2205 |
| CYPRESS | 18018 Huffmeister (North of Hwy 290 at Cypress Rosehill Rd.) | Cypress, TX 77429 | (281) 955-3002 |
| FORT BEND | 4011 Avenue H (Off Highway 90 in Rosenberg) | Rosenberg, TX 77471 | (281) 341-4904 |
| GALVESTON | 502 27th | Galveston, TX 77550 | (409) 765-4000 |
| GREENSPOINT | 2301 Gears Road (Between Veterans Memorial and T.C. Jester) | Houston, TX 77067 | (713) 945-4820 |
| HARRISBURG (major underground) | 3000 Harrisburg (east of downtown via Texas Avenue) | Houston, TX 77003 | (713) 207-4559 |
| H.O. CLARKE | 12045 South Main (Between S. Post Oak and Hiram Clarke) | Houston, TX 77035 | (713) 945-4473 |
| HUMBLE | 10010 Old F.M. 1960 (East loop 184 and Hwy 59N) | Houston, TX 77338 | (713) 945-8901 |
| KATY | 5431 Highway Blvd. (I-10 West at Katy/Fort Bend County exit) | Katy, TX 77492 | (281) 391-5104 |
| SOUTH HOUSTON (BLDG. F) | 4700 South Shaver (Between Hwy 3 and Allen Genoa) | Houston, TX 77034 | (713) 945-6945 |
| SPRING BRANCH | 3401 Brittmoore Road (at Kempwood) | Houston, TX 77043 | (713) 945-4537 |
| SUGAR LAND | 13300 West Bellfort (Between S. Dairy Ashford and Eldridge/Synott) | Houston, TX 77099 | (281) 561-2967 |
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