Oil & Gas Companies in Milam County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | E P C Oil & Gas, Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Oct 2025 |
| 2 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | May 2025 |
| 3 | Enerquest Oil & Gas LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jun 2025 |
| 4 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | Jan 2023 |
| 5 | Ernest Operating Company | Rockdale, TX 76567 | Oil & Gas Operator | Oct 2025 |
| 6 | Etoco, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 7 | Excalibur E & P, LLC | Johnson City, TX 78636 | Oil & Gas Operator | Oct 2025 |
| 8 | Exploration Techniques Inc. | Houston, TX 77027 | Oil & Gas Operator | Oct 2025 |
| 9 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
Production numbers shown above are only for Milam County, TX and for the production period listed.