Pomeroy is a city in Calhoun County, Iowa, United States. The population was 526 at the time of the 2020 census. Pomeroy was platted in 187…Pomeroy is a city in Calhoun County, Iowa, United States. The population was 526 at the time of the 2020 census. Pomeroy was platted in 1870 in anticipation of the railroad being built through the settlement. It was named for Charles Pomeroy, an Iowa politician.
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