Onslow is located in Iowa. Onslow, Iowa has a population of 184. Onslow is more family-centric than the surrounding county with 32.65% of the households containing married families with children. The county average for households married with children is 30.85%.
The median household income in Onslow, Iowa is $34,167. The median household income for the surrounding county is $58,391 compared to the national median of $57,652. The median age of people living in Onslow is 46 years.
The average high temperature in July is 83.5 degrees, with an average low temperature in January of 9.2 degrees. The average rainfall is approximately 36.6 inches per year, with 28.6 inches of snow per year.
