| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #1 | Richland County, MT | Nov 2025 | 1.3M BBLs |
| #2 | Roosevelt County, MT | Nov 2025 | 594.4k BBLs |
| #3 | Fallon County, MT | Nov 2025 | 181.1k BBLs |
| #4 | Powder River County, MT | Nov 2025 | 74.8k BBLs |
| #5 | Sheridan County, MT | Nov 2025 | 23.8k BBLs |
| #6 | Wibaux County, MT | Nov 2025 | 20.9k BBLs |
| #7 | Carbon County, MT | Nov 2025 | 19.6k BBLs |
| #8 | Blaine County, MT | Nov 2025 | 17.8k BBLs |
| #9 | Glacier County, MT | Nov 2025 | 16.9k BBLs |
| #10 | Dawson County, MT | Nov 2025 | 10.3k BBLs |
| #11 | Toole County, MT | Nov 2025 | 8.5k BBLs |
| #12 | Valley County, MT | Nov 2025 | 5.1k BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #9 | Carbon County, MT | Nov 2025 | 69.4k MCF |
| #10 | Valley County, MT | Nov 2025 | 44.8k MCF |
| #11 | Chouteau County, MT | Nov 2025 | 32.1k MCF |
| #12 | Liberty County, MT | Nov 2025 | 26.9k MCF |
| #13 | Sheridan County, MT | Nov 2025 | 12.5k MCF |
| #14 | Dawson County, MT | Nov 2025 | 4.1k MCF |
| #15 | Wibaux County, MT | Nov 2025 | 3.4k MCF |
| #16 | Rosebud County, MT | Nov 2025 | 946 MCF |
| #17 | Prairie County, MT | Nov 2025 | 600 MCF |
| #18 | Fergus County, MT | Nov 2025 | 520 MCF |
| #19 | Powder River County, MT | Nov 2025 | 450 MCF |
| #20 | Teton County, MT | Nov 2025 | 155 MCF |