NJ · GEOID 34015

Gloucester County area

Gloucester County, New Jersey covers 336.7 square miles: 322 square miles of land and 14.7 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area322 mi²
Water area14.7 mi²
Total area336.7 mi²
National land rank#2757

County outline

Generalized outline of Gloucester County, New Jersey
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Gloucester County is located

Gloucester County highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 95.6% of Gloucester County’s measured area and water for 4.4%. Its combined area converts to 872.1 square kilometers or approximately 215,510 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land322.009833.999206,085.8
Water14.72538.1389,424
Total336.734872.137215,509.8

How Gloucester County compares

By original Census land area, Gloucester County ranks #11 of 21 in New Jersey and #2757 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1 times the New Jersey county-equivalent median of 322 square miles. It accounts for 4.4% of the combined county land area in the state.

See the complete New Jersey ranking · What counts as a county equivalent?

What stands out about Gloucester County?

Gloucester County has more land than 465 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Gloucester County322 mi²
New Jersey median322 mi²
National median604.5 mi²

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Gloucester County at #2,769 nationally by total area, 12 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 4.4%, compared with a national county-equivalent median of 1.2% — 3.2 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Gloucester County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2756Gallatin County, Illinois322.9Compare
#2757Gloucester County, New Jersey322This county
#2758Berkeley County, West Virginia321.1Compare

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.

Representative coordinates

The Census internal point is 39.722648, -75.145314. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.

Source and precision

U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 833,999,202 m²; AWATER: 38,137,134 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How many acres of land are in Gloucester County?

The land measurement converts to approximately 206,086 acres. Including water, total area is approximately 215,510 acres. One square mile equals 640 acres.

Why might another source show a different area?

Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.

Can this establish a property boundary?

No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.

Cite this county

Download the complete CSV or JSON dataset