The Seventeenth United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. While its term was officially March 4, 1821 to March 4, 1823, during the fifth and sixth years of James Monroe's presidency, its first session began on December 3, 1821 ending on May 8, 1822, and its second session began on December 2, 1822 to March 3, 1823. The apportionment of seats in the House of Representatives was based on the third Census of the United States in 1810. Both chambers had a Democratic-Republican majority.