Allentown, New Jersey

Allentown population, 2020 to 2024

Allentown lost 3 residents from July 2020 to July 2024, a change of -0.2%. In the latest year it moved by +1.

Allentown covers 0.60 square miles of land and 0.03 of water, for 2,885 people per square mile of land. The median New Jersey place of 5,000+ has 4,474, so Allentown is less dense than the typical town.

What county Allentown is in

All of Allentown's residents live in Monmouth County, which had 647,520 residents in 2024. Allentown holds 0.3% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Allentown

1 ZIP Code Tabulation Area (ZCTA) overlaps Allentown by at least 10% of the ZCTA's or the borough's land: 08501. 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 Allentown is

The Census internal point of Allentown is at 40.178600, -74.590100. Trenton, the capital, is 9.2 miles WNW in a straight line. The nearest larger place is Bordentown, NJ (4,068 people), 6.5 miles away. The nearest city of 100,000 or more is Philadelphia, PA, 31.0 miles away.

Daylight in Allentown

At 40.18° N, Allentown gets about 15 h 02 min of daylight around the June solstice and 9 h 19 min around the December solstice, a swing of 5 h 44 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Allentown

The eight nearest incorporated places of 1,000+ in New Jersey, measured between internal points. The closest is Bordentown, 6.5 miles away, with 4,068 people.