Onawa is located in Monona County, IA. The population is 2,985, making Onawa the largest city in Monona County.
There are 3 public schools in Onawa with an average Homefacts rating of B+. The total crime rate for Onawa is moderate , and there are 13 registered sex offenders residing in the city. Unemployment in Onawa is low and the median home sales price is $0. Detailed and up-to-date Onawa property reports are available for any property address.
Cities near Onawa include Franklin Township, Ashton Township and Turin.