South Plainfield is located in New Jersey. South Plainfield, New Jersey has a population of 24,251. South Plainfield is more family-centric than the surrounding county with 38.05% of the households containing married families with children. The county average for households married with children is 36.67%.
The median household income in South Plainfield, New Jersey is $114,293. The median household income for the surrounding county is $96,883 compared to the national median of $69,021. The median age of people living in South Plainfield is 41.2 years.
The average high temperature in July is 86.2 degrees, with an average low temperature in January of 22.2 degrees. The average rainfall is approximately 49.4 inches per year, with 24.9 inches of snow per year.
