| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #3 | Powder River County, MT | Feb 2026 | 71k BBLs |
| #4 | Fallon County, MT | Feb 2026 | 44.5k BBLs |
| #5 | Sheridan County, MT | Feb 2026 | 20.1k BBLs |
| #6 | Carbon County, MT | Feb 2026 | 17.4k BBLs |
| #7 | Blaine County, MT | Feb 2026 | 16k BBLs |
| #8 | Glacier County, MT | Feb 2026 | 15k BBLs |
| #9 | Dawson County, MT | Feb 2026 | 10.4k BBLs |
| #10 | Valley County, MT | Feb 2026 | 3.7k BBLs |
| #11 | Rosebud County, MT | Feb 2026 | 3.3k BBLs |
| #12 | Big Horn County, MT | Feb 2026 | 2.9k BBLs |
| #13 | Toole County, MT | Feb 2026 | 2.4k BBLs |
| #14 | Musselshell County, MT | Feb 2026 | 1.8k BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #9 | Glacier County, MT | Feb 2026 | 66.1k MCF |
| #10 | Toole County, MT | Feb 2026 | 53.3k MCF |
| #11 | Valley County, MT | Feb 2026 | 37.6k MCF |
| #12 | Chouteau County, MT | Feb 2026 | 31.5k MCF |
| #13 | Liberty County, MT | Feb 2026 | 26.1k MCF |
| #14 | Sheridan County, MT | Feb 2026 | 10.1k MCF |
| #15 | Wibaux County, MT | Feb 2026 | 9.5k MCF |
| #16 | Dawson County, MT | Feb 2026 | 2.2k MCF |
| #17 | Fergus County, MT | Feb 2026 | 492 MCF |
| #18 | Prairie County, MT | Feb 2026 | 319 MCF |
| #19 | Teton County, MT | Feb 2026 | 155 MCF |
| #20 | Rosebud County, MT | Feb 2026 | 4 MCF |