U.S. House of Representatives

"Article 1, Section 2 of the Constitution provides for both the minimum and maximum sizes for the House of Representatives. Currently, there are five delegates representing the District of Columbia, the Virgin Islands, Guam, American Samoa, and the Commonwealth of the Northern Mariana Islands. A resident commissioner represents Puerto Rico. The delegates and resident commissioner possess the same powers as other members of the House, except that they may not vote when the House is meeting as the House of Representatives.

"To be elected, a representative must be at least 25 years old, a United States citizen for at least seven years and an inhabitant of the state he or she represents." - house.gov

Official site for the House of Representatives