List of members of the United States House of Representatives in the 111th Congress by seniority

This is a complete list of members of the United States House of Representatives during the 111th United States Congress (January 3, 2009 – January 3, 2011) in order of seniority. For the most part, representatives are ranked by the beginning of their terms in office. Representatives whose terms begin the same day are ranked by seniority.[1]

Representatives who return to the House after having previously served in the House are credited with service equal to one less than the number of terms they served. For example, Rep. Baron Hill had previously served three terms, from 1999 to 2005, when he was once again elected in 2006. Instead of holding seniority with others whose terms began January 3, 2007, he was credited with two terms, and holds seniority above all representatives whose terms began January 3, 2001, and after. When a representative has served a prior term of less than two terms (i.e., prior term minus one equals less than one), he or she is ranked above all other whose service begins on the same day. For example, Rep. Jay Inslee was elected to House for a term commencing January 3, 1999, after having served from 1993 to 1995. He ranks above his fellow representatives whose terms began January 3, 1999.

Committee chairmanship in the House is often associated with seniority, especially in the Democratic Caucus. The Republican leadership has a stronger hand in choosing chairmen and ranking minority members, and do so based on ideology and campaign fundraising.[2] However, party leadership is typically not associated with seniority.

Note: The "*" indicates that the representative/delegate may have served one or more non-consecutive terms while in the House of Representatives of the United States Congress.