| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #2 | Los Angeles County, CA | Jul 2023 | 620.4k BBLs |
| #3 | Fresno County, CA | Jul 2023 | 336.5k BBLs |
| #4 | Ventura County, CA | Jul 2023 | 257.7k BBLs |
| #5 | Monterey County, CA | Jul 2023 | 253.6k BBLs |
| #6 | Santa Barbara County, CA | Jul 2023 | 166.5k BBLs |
| #7 | Orange County, CA | Jul 2023 | 94.4k BBLs |
| #8 | San Luis Obispo County, CA | Jul 2023 | 48.3k BBLs |
| #9 | Kings County, CA | Jul 2023 | 4.5k BBLs |
| #10 | Tulare County, CA | Jul 2023 | 1.8k BBLs |
| #11 | Santa Clara County, CA | Jul 2023 | 1.1k BBLs |
| #12 | San Benito County, CA | Jul 2023 | 853 BBLs |
| #13 | San Bernardino County, CA | Jul 2023 | 454 BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #8 | Orange County, CA | Jul 2023 | 56.9k MCF |
| #9 | Monterey County, CA | Jul 2023 | 44.1k MCF |
| #10 | Fresno County, CA | Jul 2023 | 40k MCF |
| #11 | Madera County, CA | Jul 2023 | 34.3k MCF |
| #12 | San Luis Obispo County, CA | Jul 2023 | 33.3k MCF |
| #13 | Solano County, CA | Jul 2023 | 30.7k MCF |
| #14 | Sutter County, CA | Jul 2023 | 30.1k MCF |
| #15 | Glenn County, CA | Jul 2023 | 9.9k MCF |
| #16 | Kings County, CA | Jul 2023 | 4.3k MCF |
| #17 | San Bernardino County, CA | Jul 2023 | 3.7k MCF |
| #18 | San Benito County, CA | Jul 2023 | 1.2k MCF |
| #19 | Santa Clara County, CA | Jul 2023 | 976 MCF |