Onawa, IA Insights: Population,
Zip Codes, Influence, and Service Areas

Onawa is a city in, and the county seat of, Monona County, Iowa, United States. The population was 2,906 at the time of the 2020 Census. It is the largest town on the Iowa side of the Missouri River between Council Bluffs and Sioux City.

Zip Codes in Onawa, IA that we also serve: 51040





Cities Close To Onawa, IA That We Also Serve