| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #1 | Richland County, MT | Nov 2020 | 616.2k BBLs |
| #2 | Fallon County, MT | Nov 2020 | 247.6k BBLs |
| #3 | Roosevelt County, MT | Nov 2020 | 158.2k BBLs |
| #4 | Powder River County, MT | Nov 2020 | 173.8k BBLs |
| #5 | Wibaux County, MT | Nov 2020 | 25.8k BBLs |
| #6 | Sheridan County, MT | Nov 2020 | 39.3k BBLs |
| #7 | Dawson County, MT | Nov 2020 | 36.6k BBLs |
| #8 | Carbon County, MT | Nov 2020 | 25k BBLs |
| #9 | Glacier County, MT | Nov 2020 | 20.1k BBLs |
| #10 | Toole County, MT | Nov 2020 | 9.2k BBLs |
| #11 | Blaine County, MT | Nov 2020 | 15.5k BBLs |
| #12 | Prairie County, MT | Nov 2020 | 2.3k BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #4 | Phillips County, MT | Nov 2020 | 589.7k MCF |
| #5 | Roosevelt County, MT | Nov 2020 | 221.9k MCF |
| #6 | Hill County, MT | Nov 2020 | 202.7k MCF |
| #7 | Blaine County, MT | Nov 2020 | 230.6k MCF |
| #8 | Toole County, MT | Nov 2020 | 97.3k MCF |
| #9 | Carbon County, MT | Nov 2020 | 67.5k MCF |
| #10 | Wibaux County, MT | Nov 2020 | 21.8k MCF |
| #11 | Liberty County, MT | Nov 2020 | 32.9k MCF |
| #12 | Chouteau County, MT | Nov 2020 | 47k MCF |
| #13 | Valley County, MT | Nov 2020 | 56.3k MCF |
| #14 | Dawson County, MT | Nov 2020 | 24.4k MCF |
| #15 | Sheridan County, MT | Nov 2020 | 14.7k MCF |