A congressional district is a specific geographic area within a state that elects a representative to the United States House of Representatives. Each state is divided into these districts based on population, ensuring that each representative serves roughly the same number of constituents. The process of drawing these districts is called redistricting, which occurs every ten years after the U.S. Census. This can lead to changes in district boundaries, affecting political representation and local governance. Each district typically contains around 700,000 people, but this number can vary based on state population and size.