| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #2 | Los Angeles County, CA | Aug 2026 | 567.8k BBLs |
| #3 | Ventura County, CA | Aug 2026 | 362.3k BBLs |
| #4 | Fresno County, CA | Aug 2026 | 301.5k BBLs |
| #5 | Monterey County, CA | Aug 2026 | 175.4k BBLs |
| #6 | Orange County, CA | Aug 2026 | 148.5k BBLs |
| #7 | Santa Barbara County, CA | Aug 2026 | 134.1k BBLs |
| #8 | San Luis Obispo County, CA | Aug 2026 | 41.7k BBLs |
| #9 | Kings County, CA | Aug 2026 | 1.4k BBLs |
| #10 | Tulare County, CA | Aug 2026 | 1.2k BBLs |
| #11 | Contra Costa County, CA | Aug 2026 | 1.1k BBLs |
| #12 | San Benito County, CA | Aug 2026 | 619 BBLs |
| #13 | San Bernardino County, CA | Aug 2026 | 550 BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #12 | Glenn County, CA | Aug 2026 | 99.5k MCF |
| #13 | Orange County, CA | Aug 2026 | 55.7k MCF |
| #14 | Monterey County, CA | Aug 2026 | 48k MCF |
| #15 | Fresno County, CA | Aug 2026 | 42.7k MCF |
| #16 | Tehama County, CA | Aug 2026 | 24k MCF |
| #17 | Humboldt County, CA | Aug 2026 | 23.8k MCF |
| #18 | San Luis Obispo County, CA | Aug 2026 | 19k MCF |
| #19 | Sacramento County, CA | Aug 2026 | 16.4k MCF |
| #20 | San Bernardino County, CA | Aug 2026 | 3.0k MCF |
| #21 | Yolo County, CA | Aug 2026 | 2.7k MCF |
| #22 | Kings County, CA | Aug 2026 | 1.8k MCF |
| #23 | San Benito County, CA | Aug 2026 | 747 MCF |