| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #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 |
| #14 | Solano County, CA | Aug 2026 | 124 BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #2 | Los Angeles County, CA | Aug 2026 | 6.9M MCF |
| #3 | San Joaquin County, CA | Aug 2026 | 5.3M MCF |
| #4 | Colusa County, CA | Aug 2026 | 2.6M MCF |
| #5 | Butte County, CA | Aug 2026 | 2.6M MCF |
| #6 | Contra Costa County, CA | Aug 2026 | 1.4M MCF |
| #7 | Madera County, CA | Aug 2026 | 1.1M MCF |
| #8 | Solano County, CA | Aug 2026 | 1.0M MCF |
| #9 | Ventura County, CA | Aug 2026 | 401.8k MCF |
| #10 | Sutter County, CA | Aug 2026 | 140.4k MCF |
| #11 | Santa Barbara County, CA | Aug 2026 | 137.4k MCF |
| #12 | Glenn County, CA | Aug 2026 | 99.5k MCF |
| #13 | Orange County, CA | Aug 2026 | 55.7k MCF |