| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #11 | Toole County, MT | Sep 2021 | 14k BBLs |
| #12 | Valley County, MT | Sep 2021 | 6.1k BBLs |
| #13 | Rosebud County, MT | Sep 2021 | 6.0k BBLs |
| #14 | Big Horn County, MT | Sep 2021 | 4.0k BBLs |
| #15 | Musselshell County, MT | Sep 2021 | 3.1k BBLs |
| #16 | Pondera County, MT | Sep 2021 | 3.0k BBLs |
| #17 | Teton County, MT | Sep 2021 | 2.6k BBLs |
| #18 | Liberty County, MT | Sep 2021 | 2.3k BBLs |
| #19 | Stillwater County, MT | Sep 2021 | 2.3k BBLs |
| #20 | Prairie County, MT | Sep 2021 | 1.9k BBLs |
| #21 | Petroleum County, MT | Sep 2021 | 1.2k BBLs |
| #22 | Carter County, MT | Sep 2021 | 1.0k BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #14 | Dawson County, MT | Sep 2021 | 23.7k MCF |
| #15 | Wibaux County, MT | Sep 2021 | 22.9k MCF |
| #16 | Sheridan County, MT | Sep 2021 | 17.4k MCF |
| #17 | Pondera County, MT | Sep 2021 | 7.6k MCF |
| #18 | Stillwater County, MT | Sep 2021 | 1.4k MCF |
| #19 | Fergus County, MT | Sep 2021 | 631 MCF |
| #20 | Prairie County, MT | Sep 2021 | 600 MCF |
| #21 | Rosebud County, MT | Sep 2021 | 356 MCF |
| #22 | Teton County, MT | Sep 2021 | 257 MCF |
| #23 | Musselshell County, MT | Sep 2021 | 178 MCF |
| #24 | Garfield County, MT | Sep 2021 | 156 MCF |
| #25 | Yellowstone County, MT | Sep 2021 | 23 MCF |