Promise City Real EstatePromise City is located in Iowa. Promise City, Iowa has a population of 110. Promise City is less family-centric than the surrounding county with 16.13% of the households containing married families with children. The county average for households married with children is 29.93%. The median household income for the surrounding county is $42,434 compared to the national median of $57,652. The median age of people living in Promise City is 51.5 years. Promise City WeatherThe average high temperature in July is 84.5 degrees, with an average low temperature in January of 14.2 degrees. The average rainfall is approximately 38.6 inches per year, with 23.2 inches of snow per year. Promise City MapReal estate near Promise CityNearby CitiesNearby Cities Homes for Sale |