Plainfield Real EstatePlainfield is located in New Jersey. Plainfield, New Jersey has a population of 51,097. Plainfield is less family-centric than the surrounding county with 27.15% of the households containing married families with children. The county average for households married with children is 34.27%. The median household income in Plainfield, New Jersey is $56,425. The median household income for the surrounding county is $73,376 compared to the national median of $57,652. The median age of people living in Plainfield is 34.2 years. Plainfield WeatherThe average high temperature in July is 86.9 degrees, with an average low temperature in January of 23 degrees. The average rainfall is approximately 48.5 inches per year, with 22.8 inches of snow per year. Plainfield MapReal estate near PlainfieldNearby CitiesNearby Cities Homes for Sale |