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About Clay County

Clay County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 16,384. Its county seat is Spencer. Its name is in honor of Henry Clay Jr., a colonel who died in action in the Mexican–American War, and son of Henry Clay, famous American statesman from Kentucky. Clay County comprises the Spencer, IA Micropolitan Statistical Area. Clay County holds the annual Clay County Fair. The first newspaper in Clay County was the Peterson Patriot which started publication in 1880.

Description adapted from Wikipedia, CC BY-SA 4.0.

Clay County, Iowa
Clay County IA Courthouse — CC BY-SA 4.0, Scott Romine · source

Clay County at a glance

County seat
Spencer
Population
16,384 (2020)
Land area
573 sq mi
Founded
1851

Largest communities in Clay County

  1. Spencer county seat 11,325
  2. Lone Tree Township 772
  3. Everly 575
  4. Clay Township 518
  5. Peterson Township 486

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Official channels

Clay County election resources

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Neighboring counties

Part of Iowa Voter Check

This is the Clay County page of Iowa Voter Check, a project of True the Vote, pointing Iowa voters at the official tools that already exist — and at Scan Check Protect to verify your registration.

Where anything here differs from what Clay County or the Iowa Secretary of State publishes, they are right and this page is not.