Ohio Real EstateOhio is located in Illinois. Ohio, Illinois has a population of 569. Ohio is less family-centric than the surrounding county with 15% of the households containing married families with children. The county average for households married with children is 27.98%. The median household income in Ohio, Illinois is $53,182. The median household income for the surrounding county is $59,407 compared to the national median of $69,021. The median age of people living in Ohio is 37 years. Ohio WeatherThe average high temperature in July is 84 degrees, with an average low temperature in January of 13.5 degrees. The average rainfall is approximately 37.6 inches per year, with 28.3 inches of snow per year. Ohio MapReal estate near OhioNearby CitiesNearby Cities Homes for Sale |