| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #1 | Richland County, MT | Mar 2026 | 1.4M BBLs |
| #2 | Roosevelt County, MT | Mar 2026 | 617.7k BBLs |
| #3 | Powder River County, MT | Mar 2026 | 83.8k BBLs |
| #4 | Sheridan County, MT | Mar 2026 | 26k BBLs |
| #5 | Carbon County, MT | Mar 2026 | 19.9k BBLs |
| #6 | Dawson County, MT | Mar 2026 | 19.6k BBLs |
| #7 | Fallon County, MT | Mar 2026 | 19.3k BBLs |
| #8 | Wibaux County, MT | Mar 2026 | 19.3k BBLs |
| #9 | Blaine County, MT | Mar 2026 | 18.7k BBLs |
| #10 | Glacier County, MT | Mar 2026 | 14.2k BBLs |
| #11 | Toole County, MT | Mar 2026 | 8.9k BBLs |
| #12 | Valley County, MT | Mar 2026 | 3.9k BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #1 | Richland County, MT | Mar 2026 | 2.0M MCF |
| #2 | Roosevelt County, MT | Mar 2026 | 910.1k MCF |
| #3 | Phillips County, MT | Mar 2026 | 451.9k MCF |
| #4 | Fallon County, MT | Mar 2026 | 290.7k MCF |
| #5 | Blaine County, MT | Mar 2026 | 183.8k MCF |
| #6 | Hill County, MT | Mar 2026 | 143.6k MCF |
| #7 | Toole County, MT | Mar 2026 | 88k MCF |
| #8 | Carbon County, MT | Mar 2026 | 87.2k MCF |
| #9 | Glacier County, MT | Mar 2026 | 72.8k MCF |
| #10 | Liberty County, MT | Mar 2026 | 45.3k MCF |
| #11 | Valley County, MT | Mar 2026 | 41.7k MCF |
| #12 | Chouteau County, MT | Mar 2026 | 34.7k MCF |