Trenton
City in Mercer County, New Jersey
Trenton is a city in Mercer County, New Jersey, with 90,871 residents (2020 Census). It sits at 52 ft (16 m) above sea level. The nearest town is Morrisville, 1.4 miles SW.
- 90,871residents (2020 Census)
- 52 ftelevation · 16 m
- 7.6 sq miland area · 19.7 km²
- 11,947 / sq mipopulation density
- 08608main ZIP code (5 in total)
About Trenton
Trenton is the capital city of the U.S. state of New Jersey and the county seat of Mercer County. It was the capital of the United States from November 1 until December 24, 1784. Trenton and Princeton are the two principal cities of the Trenton–Princeton metropolitan statistical area, which encompasses those cities and all of Mercer County for statistical purposes and constitutes part of the New York combined statistical area by the U.S. Census Bureau. However, Trenton directly borders the Philadelphia metropolitan area to its west, and the city was part of the Philadelphia combined statistical area from 1990 until 2000.
In the 2020 United States census, Trenton was the fifth largest city in Central Jersey and the 10th-most-populous municipality statewide, with a population of 90,871, an increase of 5,958 (+7.0%) from the 2010 census count of 84,913, which in turn had reflected a decline of 490 (−0.6%) from the 85,403 counted in the 2000 census. The Census Bureau's Population Estimates Program calculated that the city's population was 91,506 in 2025, ranking the city the 383rd-most-populous in the country. Trenton is the only city in New Jersey that is served by three commuter rail transit systems (Amtrak, NJ Transit, and SEPTA), and the city has encouraged a spate of transit-oriented development.
Trenton dates back at least to June 3, 1719, when mention was made of a constable being appointed for Trenton while the area was still part of Hunterdon County. Boundaries were recorded for Trenton Township as of March 2, 1720. A courthouse and jail were constructed in Trenton around 1720, and the Freeholders of Hunterdon County met annually in Trenton.
On November 25, 1790, Trenton became New Jersey's capital, and by November 13, 1792, the City of Trenton was formed within Trenton Township. Trenton Township was incorporated as one of New Jersey's initial group of 104 townships by an act of the New Jersey Legislature on February 21, 1798.
The city historically had a major manufacturing industry, with factories producing iron, steel, rubber, pottery, and other products that served the nation. Today Trenton's economy is dominated by the Government of New Jersey.
Text: Wikipedia · CC BY-SA 4.0
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Living in Trenton
- Median household income
- $52,537
- Median home value
- $160,700
- Median rent
- $1,294/mo
- Median age
- 34.8
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Open in Google Maps ›Trenton, NJ population
Trenton had 90,871 residents in the 2020 Census.
| 2020 Census | 90,871 |
|---|---|
| Density | 11,947 per sq mi (4,613 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Trenton at a glance
| State | New Jersey (NJ) |
|---|---|
| County | Mercer County |
| Type | City |
| Population | 90,871 (2020) |
| Land area | 7.61 sq mi (19.7 km²) |
| Water area | 0.60 sq mi (1.55 km²) |
| Elevation | 52 ft (16 m) |
| Coordinates | 40.2238° N, 74.7636° W |
| ZIP codes | 08608, 08609, 08618, 08629, 08638 |
| Official website | trentonnj.org |
| Census code (GEOID) | 3474000 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Trenton
- Morrisville, PA1.4 mi SW
- The College of New Jersey3.2 mi N
- Ewing3.3 mi NW
- Falls, PA3.3 mi S
- Mercerville3.9 mi E
- White Horse4.0 mi SE
- Yardley, PA4.1 mi W
- Hamilton4.8 mi E
- Lower Makefield, PA4.9 mi W
- Woodside, PA5.1 mi W
- Lawrence5.5 mi NE
- Lawrenceville5.6 mi N
Straight-line distance between town centers.
Frequently asked questions about Trenton
What county is Trenton in?
Trenton is in Mercer County, New Jersey.
What is the population of Trenton, NJ?
90,871 people lived in Trenton at the 2020 Census.
What is the ZIP code of Trenton, NJ?
The main ZIP code is 08608. Other ZIP codes: 08609, 08618, 08629, 08638.
What is the elevation of Trenton?
52 feet (16 m) above sea level.
What towns are near Trenton?
Morrisville (1.4 mi), The College of New Jersey (3.2 mi), Ewing (3.3 mi), Falls (3.3 mi), Mercerville (3.9 mi).
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