| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #3 | Los Angeles County, CA | Jul 2025 | 356.2k BBLs |
| #4 | Fresno County, CA | Jul 2025 | 276.9k BBLs |
| #5 | Orange County, CA | Jul 2025 | 153.9k BBLs |
| #6 | Santa Barbara County, CA | Jul 2025 | 146.4k BBLs |
| #7 | Monterey County, CA | Jul 2025 | 124k BBLs |
| #8 | Kings County, CA | Jul 2025 | 4.7k BBLs |
| #9 | San Luis Obispo County, CA | Jul 2025 | 2.8k BBLs |
| #10 | Tulare County, CA | Jul 2025 | 2.0k BBLs |
| #11 | Santa Clara County, CA | Jul 2025 | 1.1k BBLs |
| #12 | San Benito County, CA | Jul 2025 | 684 BBLs |
| #13 | San Bernardino County, CA | Jul 2025 | 264 BBLs |
| #14 | Sacramento County, CA | Jul 2025 | 164 BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #11 | Orange County, CA | Jul 2025 | 73k MCF |
| #12 | Fresno County, CA | Jul 2025 | 49.1k MCF |
| #13 | Solano County, CA | Jul 2025 | 38.1k MCF |
| #14 | Tehama County, CA | Jul 2025 | 25.3k MCF |
| #15 | Monterey County, CA | Jul 2025 | 22.3k MCF |
| #16 | Humboldt County, CA | Jul 2025 | 13.6k MCF |
| #17 | Kings County, CA | Jul 2025 | 10.5k MCF |
| #18 | San Bernardino County, CA | Jul 2025 | 3.7k MCF |
| #19 | San Luis Obispo County, CA | Jul 2025 | 1.5k MCF |
| #20 | San Benito County, CA | Jul 2025 | 1.2k MCF |
| #21 | Santa Clara County, CA | Jul 2025 | 995 MCF |
| #22 | Yolo County, CA | Jul 2025 | 153 MCF |