Trenton, New Jersey

Trenton population, 2020 to 2024

Trenton added 647 residents from July 2020 to July 2024, a change of +0.7%. In the latest year it moved by +810. Among 194 New Jersey places of 5,000 or more, that growth ranks 158th; the median place changed by +1.8%. The median place of 5,000+ in New Jersey has 11,231 people, so Trenton is 8.1 times that size.

Trenton covers 7.61 square miles of land and 0.60 of water, for 11,983 people per square mile of land. The median New Jersey place of 5,000+ has 4,474, so Trenton is denser than the typical town.

What county Trenton is in

All of Trenton's residents live in Mercer County, which had 392,138 residents in 2024. Trenton holds 23.3% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Trenton

6 ZIP Code Tabulation Areas (ZCTAs) overlap Trenton by at least 10% of the ZCTA's or the city's land: 08608, 08609, 08611, 08618, 08629, 08638. 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 Trenton is

The Census internal point of Trenton is at 40.223800, -74.763600. That is next to the Trenton capitol point. The nearest larger place is Philadelphia, PA (1,573,916 people), 24.5 miles away.

Daylight in Trenton

At 40.22° N, Trenton gets about 15 h 02 min of daylight around the June solstice and 9 h 18 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 Trenton

The eight nearest incorporated places of 1,000+ in New Jersey, measured between internal points. The closest is Bordentown, 5.9 miles away, with 4,068 people.