Onslow is located in Iowa. Onslow, Iowa has a population of 283. Onslow is less family-centric than the surrounding county with 23.88% of the households containing married families with children. The county average for households married with children is 25.42%.
The median household income in Onslow, Iowa is $35,729. The median household income for the surrounding county is $63,279 compared to the national median of $69,021. The median age of people living in Onslow is 32.9 years.
The average high temperature in July is 83.2 degrees, with an average low temperature in January of 9.1 degrees. The average rainfall is approximately 36.6 inches per year, with 29.1 inches of snow per year.
