| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #2 | Ventura County, CA | Nov 2025 | 348k BBLs |
| #3 | Los Angeles County, CA | Nov 2025 | 334.7k BBLs |
| #4 | Fresno County, CA | Nov 2025 | 284.5k BBLs |
| #5 | Monterey County, CA | Nov 2025 | 148.7k BBLs |
| #6 | Santa Barbara County, CA | Nov 2025 | 144.3k BBLs |
| #7 | Orange County, CA | Nov 2025 | 131.3k BBLs |
| #8 | San Luis Obispo County, CA | Nov 2025 | 43.3k BBLs |
| #9 | Contra Costa County, CA | Nov 2025 | 1.4k BBLs |
| #10 | Tulare County, CA | Nov 2025 | 1.1k BBLs |
| #11 | Santa Clara County, CA | Nov 2025 | 901 BBLs |
| #12 | San Benito County, CA | Nov 2025 | 538 BBLs |
| #13 | Kings County, CA | Nov 2025 | 519 BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #11 | Glenn County, CA | Nov 2025 | 89.4k MCF |
| #12 | Sacramento County, CA | Nov 2025 | 84.6k MCF |
| #13 | Orange County, CA | Nov 2025 | 57.8k MCF |
| #14 | Solano County, CA | Nov 2025 | 51.8k MCF |
| #15 | Fresno County, CA | Nov 2025 | 45.5k MCF |
| #16 | Monterey County, CA | Nov 2025 | 34.9k MCF |
| #17 | San Luis Obispo County, CA | Nov 2025 | 26.4k MCF |
| #18 | Tehama County, CA | Nov 2025 | 24.3k MCF |
| #19 | Humboldt County, CA | Nov 2025 | 21.3k MCF |
| #20 | Kings County, CA | Nov 2025 | 7.5k MCF |
| #21 | San Bernardino County, CA | Nov 2025 | 3.3k MCF |
| #22 | Yolo County, CA | Nov 2025 | 3.2k MCF |