 Montana's single congressional district holds the largest population of any district in the country, which means its one member in the House of Representatives represents more people than any other member of the U.S. House (see List of U.S. states by population).Montana's population grew at about the national average during the 2000s, but it failed to regain its second seat in 2010.Montana has 56 counties with the United States Census Bureau stating Montana's contains 364 "places", broken down into 129 incorporated places and 235 census-designated places.