State Senator, District 8

Phone: (712) 520-0303


Committees: Ethics (Vice Chair), Health and Human Services (Vice Chair), Agriculture, Appropriations, Veterans Affairs

Subcommittee: Health and Human Services Appropriations (Chair)

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Senator Mark Costello grew up in rural Imogene, graduating from Nishna Valley High School and the University of Northern Iowa in 1984. He 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.

Senator Costello and his wife, Rachel, were married in 2001 and have five children, Matthew, Julia, Peter, Ethan and Andrew. The family resides on their farm in Mills County where they raise corn and soybeans. Rachel is a native of Lacona, Iowa and she home-schools and cares for their children. The Costellos attend Sunnyside Bible Chapel in Atlantic.

Senator Costello was elected to the Iowa House in 2012 representing House District 23, and was first elected to the Iowa Senate in a special election in 2014.