Representatives. The United States is divided into 435 congressional districts — 36 in Texas — each with a population of about 710,000 individuals. Each district elects a representative to the House for a two-year term.Representatives are also called congressmen/congresswomen.1 st District.he United States is divided into 435 congressional districts — 36 in Texas — each with a population of about 710,000 individuals. Each district elects a representative to the House for a two-year term. Representatives are also called congressmen/congresswomen. 1 st District.