Walnut Real EstateWalnut is located in Illinois. Walnut, Illinois has a population of 1,242. Walnut is less family-centric than the surrounding county with 27.49% of the households containing married families with children. The county average for households married with children is 27.98%. The median household income in Walnut, Illinois is $47,367. 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 Walnut is 45.5 years. Walnut WeatherThe average high temperature in July is 83.8 degrees, with an average low temperature in January of 13.2 degrees. The average rainfall is approximately 37.5 inches per year, with 28.5 inches of snow per year. Walnut MapReal estate near WalnutNearby CitiesNearby Cities Homes for Sale |