The 2nd covered the eastern part of the state, including Billings, Glendive, Miles City, and other towns.

After the release of the 2020 United States census results, Montana regained its 2nd congressional district.

[3] On November 12, 2021, Montana's Districting and Apportionment Commission approved a new congressional map in which the 2nd congressional district would cover the eastern portion of Montana, in a configuration similar to the 1983–1993 map.

[4] Except for the city of Helena and some Native American areas like Big Horn County and part of longtime national bellwether Blaine County, the district is powerfully Republican.

Pondera County communities in the 1st district include Brady, Conrad, and Midway Colony.