Renwick is a city in Humboldt County, Iowa, United States. The population was 234 at the time of the 2020 census.

History

Renwick was platted in 1882.

In 1970 the population was 480. By 1987, this was down to 350. By then, there was no longer a bank branch that provided all services for customers, nor was there a hardware store. Bob Secter of the Los Angeles Times

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