| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #5 | Monterey County, CA | Mar 2026 | 157.9k BBLs |
| #6 | Orange County, CA | Mar 2026 | 150.6k BBLs |
| #7 | Santa Barbara County, CA | Mar 2026 | 135.7k BBLs |
| #8 | San Luis Obispo County, CA | Mar 2026 | 44.4k BBLs |
| #9 | Kings County, CA | Mar 2026 | 3.8k BBLs |
| #10 | Contra Costa County, CA | Mar 2026 | 1.3k BBLs |
| #11 | San Benito County, CA | Mar 2026 | 1.1k BBLs |
| #12 | Tulare County, CA | Mar 2026 | 925 BBLs |
| #13 | Santa Clara County, CA | Mar 2026 | 902 BBLs |
| #14 | San Bernardino County, CA | Mar 2026 | 513 BBLs |
| #15 | Solano County, CA | Mar 2026 | 115 BBLs |
| #16 | San Mateo County, CA | Mar 2026 | 4 BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #12 | Sacramento County, CA | Mar 2026 | 78.4k MCF |
| #13 | Orange County, CA | Mar 2026 | 62.1k MCF |
| #14 | Monterey County, CA | Mar 2026 | 47.8k MCF |
| #15 | Fresno County, CA | Mar 2026 | 46.4k MCF |
| #16 | Contra Costa County, CA | Mar 2026 | 37.1k MCF |
| #17 | Humboldt County, CA | Mar 2026 | 24k MCF |
| #18 | Tehama County, CA | Mar 2026 | 23.3k MCF |
| #19 | San Luis Obispo County, CA | Mar 2026 | 18.7k MCF |
| #20 | San Bernardino County, CA | Mar 2026 | 3.2k MCF |
| #21 | Yolo County, CA | Mar 2026 | 2.7k MCF |
| #22 | Kings County, CA | Mar 2026 | 1.8k MCF |
| #23 | San Benito County, CA | Mar 2026 | 1.5k MCF |