Middlesex, New Jersey

Middlesex population, 2020 to 2024

Middlesex added 283 residents from July 2020 to July 2024, a change of +1.9%. In the latest year it moved by +202. Among 194 New Jersey places of 5,000 or more, that growth ranks 93rd; the median place changed by +1.8%. The median place of 5,000+ in New Jersey has 11,231 people, so Middlesex is 1.3 times that size.

Middlesex covers 3.49 square miles of land and 0.02 of water, for 4,262 people per square mile of land. The median New Jersey place of 5,000+ has 4,474, so Middlesex is close to the typical town.

What county Middlesex is in

All of Middlesex's residents live in Middlesex County, which had 890,119 residents in 2024. Middlesex holds 1.7% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Middlesex

1 ZIP Code Tabulation Area (ZCTA) overlaps Middlesex by at least 10% of the ZCTA's or the borough's land: 08846. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a borough that annexed land after 2020 may reach into ZIP codes not listed here.

Where Middlesex is

The Census internal point of Middlesex is at 40.574600, -74.498300. Trenton, the capital, is 27.9 miles SSW in a straight line. The nearest larger place is South Plainfield, NJ (25,062 people), 4.4 miles away. The nearest city of 100,000 or more is Elizabeth, NJ, 17.2 miles away.

Daylight in Middlesex

At 40.57° N, Middlesex 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 Middlesex

The eight nearest incorporated places of 1,000+ in New Jersey, measured between internal points. The closest is Dunellen, 2.0 miles away, with 8,411 people.