Counties & Associated RRC District Codes
Oil and Gas District Boundaries Map
| Anderson | 06 | Gillespie | 01 | Moore | 10 |
| Andrews | 08 | Glasscock | 08 | Morris | 06 |
| Angelina | 06 | Goliad | 02 | Motley | 8A |
| Aransas | 04 | Gonzales | 01 | Nacogdoches | 06 |
| Archer | 09 | Gray | 10 | Navarro | 05 |
| Armstrong | 10 | Grayson | 09 | Newton | 03 |
| Atascosa | 01 | Gregg | 06 | Nolan | 7B |
| Austin | 03 | Grimes | 03 | Nueces | 04 |
| Bailey | 8A | Guadalupe | 01 | Ochiltree | 10 |
| Bandera | 01 | Hale | 8A | Oldham | 10 |
| Bastrop | 01 | Hall | 10 | Orange | 03 |
| Baylor | 09 | Hamilton | 7B | Palo Pinto | 7B |
| Bee | 02 | Hansford | 10 | Panola | 06 |
| Bell | 01 | Hardeman | 09 | Parker | 7B |
| Bexar | 01 | Hardin | 03 | Parmer | 10 |
| Blanco | 01 | Harris | 03 | Pecos | 08 |
| Borden | 8A | Harrison | 06 | Polk | 03 |
| Bosque | 05 | Hartley | 10 | Potter | 10 |
| Bowie | 06 | Haskell | 7B | Presidio | 08 |
| Brazoria | 03 | Hays | 01 | Rains | 05 |
| Brazos | 03 | Hemphill | 10 | Randall | 10 |
| Brewster | 08 | Henderson | 05 | Reagan | 7C |
| Briscoe | 10 | Hidalgo | 04 | Real | 01 |
| Brooks | 04 | Hill | 05 | Red River | 06 |
| Brown | 7B | Hockley | 8A | Reeves | 08 |
| Burleson | 03 | Hood | 7B | Refugio | 02 |
| Burnet | 01 |
Hopkins |
05 | Roberts | 10 |
| Caldwell | 01 |
Houston |
06 | Robertson | 05 |
| Calhoun | 02 |
Howard |
08 | Rockwall | 05 |
| Callahan | 7B |
Hudspeth |
08 | Runnels | 7C |
| Cameron | 04 |
Hunt |
05 | Rusk | 06 |
| Camp | 06 |
Hutchinson |
10 | Sabine | 06 |
| Carson | 10 |
Irion |
7C | San Augustine | 06 |
| Cass | 06 |
Jack |
09 | San Jacinto | 03 |
| Castro | 10 |
Jackson |
02 | San Patricio | 04 |
| Chambers | 03 |
Jasper |
03 | San Saba | 7B |
| Cherokee | 06 |
Jeff Davis |
08 | Schleicher | 7C |
| Childress | 10 |
Jefferson |
03 | Scurry | 8A |
| Clay | 09 |
Jim Hogg |
04 | Schackelford | 7B |
| Cochran | 8A |
Jim Wells |
04 | Shelby | 06 |
| Coke | 7C |
Johnson |
05 | Sherman | 10 |
| Coleman | 7B |
Jones |
7B | Smith | 06 |
| Collin | 05 |
Karnes |
02 | Somervell | 7B |
| Collingsworth | 10 |
Kaufman |
05 | Starr | 04 |
| Colorado | 03 |
Kendall |
01 | Stephens | 7B |
| Comal | 01 |
Kenedy |
04 | Sterling | 08 |
| Comanche | 7B |
Kent |
8A | Stonewall | 7B |
| Concho | 7C |
Kerr |
01 | Sutton | 7C |
| Cooke | 09 |
Kimble |
7C | Swisher | 10 |
| Coryell | 7B |
King |
8A | Tarrant | 05 |
| Cottle | 8A |
Kinney |
01 | Taylor | 7B |
| Crane | 08 |
Kleberg |
04 | Terrell | 7C |
| Crockett | 7C |
Knox |
09 | Terry | 8A |
| Crosby | 8A |
Lamar |
05 | Throckmorton | 7B |
| Culberson | 08 |
Lamb |
8A | Titus | 06 |
| Dallam | 10 |
Lampasas |
7B | Tom Green | 7C |
| Dallas | 05 |
La Salle |
01 | Travis | 01 |
| Dawson | 8A |
Lavaca |
02 | Trinity | 03 |
| Deaf Smith | 10 |
Lee |
03 | Tyler | 03 |
| Delta | 05 |
Leon |
05 | Upshur | 06 |
| Denton | 09 |
Liberty |
03 | Upton | 7C |
| De Witt | 02 |
Limestone |
05 | Uvalde | 01 |
| Dickens | 8A |
Lipscomb |
10 | Val Verde | 01 |
| Dimmit | 01 |
Live Oak |
02 | Van Zandt | 05 |
| Donley | 10 |
Llano |
01 | Victoria | 02 |
| Duval | 04 |
Loving |
08 | Walker | 03 |
| Eastland | 7B |
Lubbock |
8A | Waller | 03 |
| Ector | 08 |
Lynn |
8A | Ward | 08 |
| Edwards | 01 |
McCulloch |
7C | Washington | 03 |
| Ellis | 05 |
McLennan |
05 | Webb | 04 |
| El Paso | 08 |
McMullen |
01 | Wharton | 03 |
| Erath | 7B |
Madison |
03 | Wheeler | 10 |
| Falls | 05 |
Marion |
06 | Wichita | 09 |
| Fannin | 05 |
Martin |
08 | Wilbarger | 09 |
| Fayette | 03 |
Mason |
01 | Willacy | 04 |
| Fisher | 7B |
Matagorda |
03 | Williamson | 01 |
| Floyd | 8A |
Maverick |
01 | Wilson | 01 |
| Foard | 09 |
Medina |
01 | Winkler | 08 |
| Fort Bend | 03 |
Menard |
7C | Wise | 09 |
| Franklin | 06 |
Midland |
08 | Wood | 06 |
| Freestone | 05 |
Milam |
01 | Yoakum | 8A |
| Frio | 01 |
Mills |
7B | Young | 09 |
| Gaines | 8A |
Mitchell |
08 | Zapata | 04 |
| Galveston | 03 |
Montague |
09 | Zavala | 01 |
| Garza | 8A |
Montgomery |
03 | ||