Oil & Gas Companies in Bastrop County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Gassco Petroleum Corporation | Seguin, TX 78155 | Oil & Gas Operator | Oct 2025 |
| 2 | Geo Co., Inc. | Austin, TX 78745 | Oil Operator | Apr 1988 |
| 3 | Geomeg Energy Operating Co., LLC | Aransas Pass, TX 78336 | Oil & Gas Operator | Oct 2025 |
| 4 | Geomeg Operating, LLC | Dripping SPGS, TX 78620 | Oil Operator | Nov 2010 |
| 5 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 6 | Ginco Operating Co. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 7 | Goldmark Energy Corporation | Spring, TX 77393 | Oil & Gas Operator | Jul 2010 |
| 8 | Great Plains Resources, Inc. | Nixon, TX 78140 | Oil & Gas Operator | Oct 2025 |
| 9 | Gulfstar Properties, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Bastrop County, TX and for the production period listed.