| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #1 | Richland County, MT | Aug 2025 | 1.1M BBLs |
| #2 | Roosevelt County, MT | Aug 2025 | 761.5k BBLs |
| #3 | Fallon County, MT | Aug 2025 | 185.9k BBLs |
| #4 | Powder River County, MT | Aug 2025 | 78.5k BBLs |
| #5 | Carbon County, MT | Aug 2025 | 20.7k BBLs |
| #6 | Sheridan County, MT | Aug 2025 | 20.3k BBLs |
| #7 | Wibaux County, MT | Aug 2025 | 19.4k BBLs |
| #8 | Glacier County, MT | Aug 2025 | 17.3k BBLs |
| #9 | Blaine County, MT | Aug 2025 | 15.4k BBLs |
| #10 | Dawson County, MT | Aug 2025 | 10.7k BBLs |
| #11 | Toole County, MT | Aug 2025 | 7.3k BBLs |
| #12 | Valley County, MT | Aug 2025 | 5.5k BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #1 | Powder River County, MT | Aug 2025 | 5.8M MCF |
| #2 | Richland County, MT | Aug 2025 | 1.9M MCF |
| #3 | Roosevelt County, MT | Aug 2025 | 893.3k MCF |
| #4 | Phillips County, MT | Aug 2025 | 476.9k MCF |
| #5 | Fallon County, MT | Aug 2025 | 335.3k MCF |
| #6 | Blaine County, MT | Aug 2025 | 186.3k MCF |
| #7 | Hill County, MT | Aug 2025 | 151.1k MCF |
| #8 | Carbon County, MT | Aug 2025 | 86.5k MCF |
| #9 | Glacier County, MT | Aug 2025 | 71.9k MCF |
| #10 | Toole County, MT | Aug 2025 | 59.1k MCF |
| #11 | Valley County, MT | Aug 2025 | 44.1k MCF |
| #12 | Chouteau County, MT | Aug 2025 | 32.3k MCF |