Apportionment

Below is a map of the apportionment data from the 2020 Census.  There is also a second tab that provides the data in a table. As the map shows, due to the growth in the state's population, Montana will gain a second seat in the U.S. House of Representatives.

In Montana, the Districting and Apportionment Commission has authority under the Montana Constitution to draw the boundaries of congressional and legislative districts.  The process for establishing the boundaries for Montanan's second congressional district will begin once the U.S. Census Bureau releases the 2020 Census data set showing population and characteristics below the state level. This sub-state level data is also needed before boundaries for house and senate districts in the state legislature can be redrawn.  The release of this sub-state level data is expected sometime late summer or early fall.  CEIC will post the data to this site once it is available.

For more information on the apportionment process and other interactive tools, you can visit the U.S. Census Apportionment page or the U.S. Census Historical Apportionment Data Map.