Clay County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 16,667. 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 holds the annual Clay County Fair. The first newspaper in Clay County was the Peterson Patriot which started publication in 1880.

On Line Data

Cities Dickens Everly Fostoria Gillett Grove Greenville Peterson Rossie Royal Spencer Webb Townships Clay Douglas Freeman Garfield Gillett Grove Herdland Lake Lincoln Logan Lone Tree Meadow Peterson Riverton Sioux Summit Waterford

Adjacent counties Dickinson County (north) Palo Alto County (east) Buena Vista County (south) O'Brien County (west)

Clay County Court House

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