Onawa Real EstateOnawa is located in Iowa. Onawa, Iowa has a population of 2,894. Onawa is less family-centric than the surrounding county with 24.24% of the households containing married families with children. The county average for households married with children is 25.85%. The median household income in Onawa, Iowa is $43,788. The median household income for the surrounding county is $56,107 compared to the national median of $69,021. The median age of people living in Onawa is 38.3 years. Onawa WeatherThe average high temperature in July is 86.4 degrees, with an average low temperature in January of 9.5 degrees. The average rainfall is approximately 31.8 inches per year, with 26.2 inches of snow per year. Onawa MapReal estate near OnawaNearby CitiesNearby Cities Homes for Sale |