| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #2 | Los Angeles County, CA | Nov 2023 | 675.1k BBLs |
| #3 | Fresno County, CA | Nov 2023 | 405.3k BBLs |
| #4 | Ventura County, CA | Nov 2023 | 397.6k BBLs |
| #5 | Monterey County, CA | Nov 2023 | 349.1k BBLs |
| #6 | Santa Barbara County, CA | Nov 2023 | 187.7k BBLs |
| #7 | Orange County, CA | Nov 2023 | 173k BBLs |
| #8 | San Luis Obispo County, CA | Nov 2023 | 50.3k BBLs |
| #9 | Kings County, CA | Nov 2023 | 8.0k BBLs |
| #10 | Tulare County, CA | Nov 2023 | 2.1k BBLs |
| #11 | Santa Clara County, CA | Nov 2023 | 1.3k BBLs |
| #12 | San Benito County, CA | Nov 2023 | 1.0k BBLs |
| #13 | Contra Costa County, CA | Nov 2023 | 675 BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #11 | Santa Barbara County, CA | Nov 2023 | 175.8k MCF |
| #12 | Glenn County, CA | Nov 2023 | 131.4k MCF |
| #13 | Sacramento County, CA | Nov 2023 | 131.3k MCF |
| #14 | Orange County, CA | Nov 2023 | 73.4k MCF |
| #15 | Monterey County, CA | Nov 2023 | 54.9k MCF |
| #16 | Fresno County, CA | Nov 2023 | 47.9k MCF |
| #17 | San Luis Obispo County, CA | Nov 2023 | 35.3k MCF |
| #18 | Tehama County, CA | Nov 2023 | 35.1k MCF |
| #19 | Humboldt County, CA | Nov 2023 | 23.1k MCF |
| #20 | Kings County, CA | Nov 2023 | 15k MCF |
| #21 | San Bernardino County, CA | Nov 2023 | 3.2k MCF |
| #22 | Yolo County, CA | Nov 2023 | 3.0k MCF |