South Plainfield is a city located in the New Jersey region of the United States. During the most recent census, South Plainfield had a population of 23,385. South Plainfield is the 70th most poplulated city in the New Jersey region, the 1,898th most populated city in the United States and the 12,271st most populated city in the world. South Plainfield is in the America/New York timezone which is 4 hours behind UTC. South Plainfield adjusts the hour with daylight savings time during the winter months.
South Plainfield is located at sea level (18 meters / 59 feet). The closest cities to South Plainfield are Plainfield (4.2 km / 2.6 miles), Dunellen (5.2 km / 3.2 miles), Metuchen (5.7 km / 3.6 miles), Edison (6.7 km / 4.2 miles) and Middlesex (6.9 km / 4.3 miles)