Under Senate File 75 (passed in 2025), Johnson County is required to elect county supervisors by district, instead of the at large system used in past elections.
The district map was prepared by the Legislative Service Bureau and released on December 4, 2025. It was approved by the Board of Supervisors on December 23, 2025, and received formal technical approval by the Secretary of State on January 7, 2026.
Legislative Service Bureau Report on Districts
The five supervisors currently in office will serve until the end of 2026. Three supervisors were elected to four year terms in 2024, but those terms will now end early as the county transitions to the district system.
All five supervisor seats will be on the 2026 primary and general election ballot. Districts 2, 3, and 4 will have two year terms, and districts 1 and 5 will have four year terms. Term lengths were determined by random drawing on January 14. Candidates must live in their districts, and voters will only vote in the contest for their own district.
Supervisor elections will return to four year staggered terms in 2028. Districts 2, 3, and 4 will be on the ballot in 2028; districts 1 and 5 will be on the 2030 ballot. Districts will be redrawn in 2031 to reflect the results of the 2030 census.
Districts and Precincts
District 1 (Four year term in 2026)
Hardin, Jefferson East-Shueyville, Jefferson West-Monroe-Swisher, Madison, North Liberty 01, North Liberty 02, North Liberty 03, North Liberty 04, North Liberty 05, North Liberty 06, North Liberty 08, North Liberty 7-Madison HD 85, Oxford-Oxford, Penn-Coralville Annex
District 2 (Two year term in 2026)
Big Grove-Solon Annex, Cedar, Fremont-Lincoln-Lone Tree, Graham, Hills-Liberty-Pleasant Valley, Iowa City 01, Iowa City 06, Iowa City 12, Iowa City 15-East Lucas SE, Iowa City 16-Scott HD 90, Iowa City 24, Newport, Scott-West Branch-Iowa City Annex, Solon
District 3 (Two year term in 2026)
Coralville 01, Coralville 02-Coralville 09, Coralville 03, Coralville 04, Coralville 05, Coralville 06, Coralville 07, Coralville 08, Sharon, Tiffin 01-Clear Creek, Tiffin 02, Union, Washington
District 4 (Two year term in 2026)
Iowa City 04, Iowa City 05, Iowa City 11, Iowa City 17, Iowa City 18, Iowa City 19, Iowa City 20, Iowa City 21, Iowa City 22-East Lucas North, Iowa City 23, Iowa City 25
District 5 (Four year term in 2026)
Iowa City 02, Iowa City 03, Iowa City 07, Iowa City 08, Iowa City 09, Iowa City 10-East Lucas SW, Iowa City 13, Iowa City 14, Iowa City 26, Iowa City 27, University Heights, West Lucas