Denison Real EstateDenison is located in Iowa. Denison, Iowa has a population of 8,361. Denison is more family-centric than the surrounding county with 41.45% of the households containing married families with children. The county average for households married with children is 35.28%. The median household income in Denison, Iowa is $51,122. The median household income for the surrounding county is $51,091 compared to the national median of $57,652. The median age of people living in Denison is 32.5 years. Denison WeatherThe average high temperature in July is 85.2 degrees, with an average low temperature in January of 11.4 degrees. The average rainfall is approximately 32.4 inches per year, with 36 inches of snow per year. Denison MapReal estate near DenisonNearby CitiesNearby Cities Homes for Sale |