Portsmouth Real EstatePortsmouth is located in Iowa. Portsmouth, Iowa has a population of 156. Portsmouth is less family-centric than the surrounding county with 21.21% of the households containing married families with children. The county average for households married with children is 29.49%. The median household income in Portsmouth, Iowa is $50,000. The median household income for the surrounding county is $55,638 compared to the national median of $57,652. The median age of people living in Portsmouth is 50.5 years. Portsmouth WeatherThe average high temperature in July is 83.8 degrees, with an average low temperature in January of 10.2 degrees. The average rainfall is approximately 33.4 inches per year, with 30.3 inches of snow per year. Portsmouth MapReal estate near PortsmouthNearby CitiesNearby Cities Homes for Sale |