Plainfield, New Jersey

Plainfield population, 2020 to 2024

Plainfield added 2,163 residents from July 2020 to July 2024, a change of +4.0%. In the latest year it moved by +946. Among 194 New Jersey places of 5,000 or more, that growth ranks 31st; the median place changed by +1.8%. The median place of 5,000+ in New Jersey has 11,231 people, so Plainfield is 5.0 times that size.

Plainfield covers 5.96 square miles of land, for 9,481 people per square mile of land. The median New Jersey place of 5,000+ has 4,474, so Plainfield is denser than the typical town.

What county Plainfield is in

All of Plainfield's residents live in Union County, which had 594,160 residents in 2024. Plainfield holds 9.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Plainfield

3 ZIP Code Tabulation Areas (ZCTAs) overlap Plainfield by at least 10% of the ZCTA's or the city's land: 07060, 07062, 07063. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Plainfield is

The Census internal point of Plainfield is at 40.615400, -74.415800. Trenton, the capital, is 32.6 miles SSW in a straight line. The nearest larger place is New Brunswick, NJ (57,487 people), 9.0 miles away. The nearest city of 100,000 or more is Elizabeth, NJ, 12.2 miles away.

Daylight in Plainfield

At 40.62° N, Plainfield gets about 15 h 05 min of daylight around the June solstice and 9 h 16 min around the December solstice, a swing of 5 h 49 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Plainfield

The eight nearest incorporated places of 1,000+ in New Jersey, measured between internal points. The closest is North Plainfield, 1.3 miles away, with 23,072 people.