Allen Real EstateAllen real estate listings include condos, townhomes, and single family homes for sale. Commercial properties are also available. If you see a property you’re interested in, contact a Allen real estate agent to arrange a tour today! Allen, Indiana has a population of 4,796. The median household income in Allen, Indiana is $37,232. The median household income for the surrounding county is $52,393 compared to the national median of $57,652. The median age of people living in Allen is 38.1 years. Allen WeatherThe average high temperature in July is 83 degrees, with an average low temperature in January of 16.5 degrees. The average rainfall is approximately 38.8 inches per year, with 28.3 inches of snow per year. Nearby Homes for Sale |