Plainfield Real EstatePlainfield is located in Iowa. Plainfield, Iowa has a population of 580. Plainfield is less family-centric than the surrounding county with 31.37% of the households containing married families with children. The county average for households married with children is 32.05%. The median household income in Plainfield, Iowa is $56,944. The median household income for the surrounding county is $65,440 compared to the national median of $57,652. The median age of people living in Plainfield is 33.3 years. Plainfield WeatherThe average high temperature in July is 82.7 degrees, with an average low temperature in January of 7.1 degrees. The average rainfall is approximately 35.8 inches per year, with 33 inches of snow per year. Plainfield MapReal estate near PlainfieldNearby CitiesNearby Cities Homes for Sale |