| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #7 | Glacier County, MT | Sep 2025 | 16.9k BBLs |
| #8 | Blaine County, MT | Sep 2025 | 14.4k BBLs |
| #9 | Dawson County, MT | Sep 2025 | 11.2k BBLs |
| #10 | Sheridan County, MT | Sep 2025 | 10.1k BBLs |
| #11 | Toole County, MT | Sep 2025 | 7.9k BBLs |
| #12 | Valley County, MT | Sep 2025 | 5.0k BBLs |
| #13 | Rosebud County, MT | Sep 2025 | 4.2k BBLs |
| #14 | Big Horn County, MT | Sep 2025 | 2.7k BBLs |
| #15 | Prairie County, MT | Sep 2025 | 1.8k BBLs |
| #16 | Musselshell County, MT | Sep 2025 | 1.5k BBLs |
| #17 | Petroleum County, MT | Sep 2025 | 1.4k BBLs |
| #18 | Liberty County, MT | Sep 2025 | 1.1k BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #9 | Glacier County, MT | Sep 2025 | 74.9k MCF |
| #10 | Toole County, MT | Sep 2025 | 57.2k MCF |
| #11 | Valley County, MT | Sep 2025 | 42.8k MCF |
| #12 | Chouteau County, MT | Sep 2025 | 31.8k MCF |
| #13 | Liberty County, MT | Sep 2025 | 23.2k MCF |
| #14 | Sheridan County, MT | Sep 2025 | 5.1k MCF |
| #15 | Dawson County, MT | Sep 2025 | 3.8k MCF |
| #16 | Wibaux County, MT | Sep 2025 | 3.5k MCF |
| #17 | Prairie County, MT | Sep 2025 | 600 MCF |
| #18 | Fergus County, MT | Sep 2025 | 586 MCF |
| #19 | Teton County, MT | Sep 2025 | 155 MCF |
| #20 | Rosebud County, MT | Sep 2025 | 150 MCF |