House District 31 · Rio Grande City, TX
A South Texas investor and rancher first elected in 2002, Rep. Guillen is the ninth most senior member of the Texas House and serves as Chair of the Agriculture & Livestock Committee. He represents eleven counties across House District 31 and has served twelve consecutive legislative sessions.
Biography
Rep. Ryan Guillen is a Republican member of the Texas House of Representatives, first elected in 2003 to represent District 31, which covers eleven South Texas counties — Brooks, Duval, Jim Hogg, Karnes, Kenedy, La Salle, Live Oak, McMullen, Starr, Wilson, and Zapata — stretching from the Rio Grande Valley north to outside San Antonio. He earned his Bachelor of Science in Agriculture from Texas A&M University.
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Born October 27, 1977, Rep. Guillen grew up working at his family’s feed store and farm in Rio Grande City. He briefly taught high school agriculture before pursuing public office. First elected in 2002 at age 24, he was one of the youngest members ever elected to the Texas House and has served in every regular session since taking office in January 2003. He also holds the rank of Major in the Texas State Guard.
Rep. Guillen was first elected as a Democrat and served nine consecutive terms in that party before announcing on November 15, 2021 that he was switching to the Republican Party, citing an increasing alignment between his values and the GOP on border security, energy, and public safety issues. He often voted with Republicans on key issues during his years as a Democrat, including on gun rights and pro-life measures, and was one of the few Democrats who did not travel to Washington, D.C. during the 2021 quorum-break over election legislation. In the 89th Legislature he and fellow South Texan Rep. Richard Peña Raymond were honored by House resolution as the longest-serving desk mates in the chamber’s history.
For the 89th Legislative Session, Speaker Dustin Burrows appointed Rep. Guillen as Chair of the House Committee on Agriculture & Livestock, as well as to the House Committees on Redistricting and State Affairs, plus the Select Committee on Congressional Redistricting.
Biography sourced from the official Texas House of Representatives website.
Contact Information
Austin, TX 78701
(512) 463-0416
Rio Grande City, TX 78582
(956) 716-4838
District Information
Committee Membership
Committee assignments for the 89th Legislative Session (2025).
Most Recent Session Activity
Activity during the 89th Legislative Session (89R).
Authored Legislation by Session
Bills authored and joint-authored during each legislative session. Sessions from 71R (1989) onward link to the official Texas Legislature Online report; pre-1989 records are historical reference only.
Campaign Finance Data
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