Shellsburg Real EstateShellsburg is located in Iowa. Shellsburg, Iowa has a population of 973. Shellsburg is less family-centric than the surrounding county with 23.37% of the households containing married families with children. The county average for households married with children is 34.5%. The median household income in Shellsburg, Iowa is $44,868. The median household income for the surrounding county is $64,061 compared to the national median of $57,652. The median age of people living in Shellsburg is 45.6 years. Shellsburg WeatherThe average high temperature in July is 84 degrees, with an average low temperature in January of 11.4 degrees. The average rainfall is approximately 36.8 inches per year, with 33.5 inches of snow per year. Shellsburg MapReal estate near ShellsburgNearby CitiesNearby Cities Homes for Sale |