Gloucester County, New Jersey

County seat: Woodbury · Population 312,638 (2025) · 322 sq mi

Gloucester County is the 14th most populous of New Jersey's 21 counties, with 312,638 people (2025 estimate). Its county seat is Woodbury. The map shows its 11 cities and towns and the 7 neighboring counties.

Map of Gloucester County, New Jersey with cities, towns and the county boundary
Gloucester County, New Jersey with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Gloucester County facts

County seat
Woodbury
Population (2025 estimate)
312,638 +3.4% since 2020
Land area
322 sq mi 11th largest of 21
Water area
15 sq mi
Population density
971 per sq mi
Established
1686
Named after
Gloucester city and county town of Gloucestershire, England, UK
Largest city
Washington 49,840
Median household income
$105,115
Cities and towns
11 plus 17 CDPs
ZIP codes
31
Time zone
Eastern
FIPS code
34015

Cities and towns in Gloucester County

Gloucester County has 11 incorporated cities, towns and villages. Populations count the people living inside Gloucester County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
GlassboroBorough24,483
Woodbury (county seat)City10,130
ClaytonBorough9,041
PitmanBorough8,961
PaulsboroBorough6,329
WestvilleBorough4,357
Woodbury HeightsBorough3,162
National ParkBorough3,088
SwedesboroBorough2,766
WenonahBorough2,330
NewfieldBorough1,823

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Williamstown14,705
Beckett5,017
Mullica Hill4,591
Oak Valley4,413
Gibbstown3,685
Richwood3,197
Turnersville3,136
Sewell2,982
Thorofare2,348
Franklinville1,904
Mickleton1,786
Malaga1,693
Victory Lakes1,577
Mount Royal1,155
Grenloch336Camden County
Bridgeport228
Harrisonville227

ZIP codes in Gloucester County

31 ZIP codes reach into Gloucester County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Gloucester County, 2020–2025

Gloucester County grew by 10,356 people (+3.4%) between April 2020 and July 2025: 384 more deaths than births and a net gain of 10,717 people from migration.

Year (July 1)Population
2020302,564
2021304,700
2022306,718
2023308,693
2024311,263
2025312,638

Neighboring counties

Printable Gloucester County map

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Sources

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