Congressional district

territorial division made for Congressional elections

A congressional district is an electoral constituency which elects a member of a congress. Countries that have congressional districts are Japan, the Philippines, and the United States. The size of a district is based on the number of people who live in that district. A district is often very big if there are few people that live there; a district is often small if it's in a big city because there would are many people living there.

A map of the congressional districts in the United States.

By country


United States


The United States has 435 districts.[1] Each district has about 747,000 people living in them.[2]



  1. See Public Law 62-5 of 1911, though Congress has the authority to change that number. The Reapportionment Act of 1929 capped the size of the House at 435.
  2. Congressional Apportionment. 2010 Census Briefs U.S. Census.