Meet Our Members – Mark Costello

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Representative Mark Costello is currently serving his 1st term in the Iowa House.  He represents Iowa’s 23rd District, which includes Red Oak and Glenwood.

Rep. Costello serves on the Human Resources, Labor, State Government, and Veterans Affairs committees.  He is also the Vice Chair of the Health and Human Services budget subcommittee.

Mark grew up in rural Imogene, graduating from Nishna Valley High School and the University of Northern Iowa in 1984. Mark was employed as a computer programmer/analyst with Garst Seed Company in Coon Rapids, IA for five years prior to returning to the family farm.

Mark and his wife, Rachel, were married in 2001 and have four children, Matthew, Julia, Peter  and Ethan. The family resides on their farm in Mills County where they raise corn, soybeans and registered Simmental cattle. Rachel is a native of Lacona, IA and home schools and cares for the children. The Costello’s attend Sunnyside Bible Chapel in Atlantic.

To contact Mark, you can email him at