Gloucester County vs Mercer County

A side-by-side comparison of Gloucester County and Mercer County: population, income, housing, and more.

Gloucester County and Mercer County are counties in New Jersey. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Mercer County has the higher population (383,286 vs 304,504 in Gloucester County). Gloucester County has the higher median household income ($102,807 vs $96,333 in Mercer County). Mercer County has the higher median home value ($351,000 vs $283,500 in Gloucester County).

Population, income & housing

	Gloucester County	Mercer County
Population	304,504	383,286
Median age	40.1 yrs	39.2 yrs
Median household income	$102,807	$96,333
Median home value	$283,500	$351,000
Median gross rent	$1,480	$1,515
Housing units	117,530	150,600
Homeownership rate	79.4%	61.9%
Bachelor's degree or higher	35.8%	44.9%
Unemployment rate	5.2%	6.1%

Trends (ACS 5-year, 2019–2023)

	Gloucester County	Mercer County
Population	291,165 → 304,504 (+4.6%)	367,922 → 383,286 (+4.2%)
Median household income	$87,283 → $102,807 (+17.8%)	$81,057 → $96,333 (+18.8%)
Median home value	$219,700 → $283,500 (+29.0%)	$291,100 → $351,000 (+20.6%)
Median gross rent	$1,225 → $1,480 (+20.8%)	$1,266 → $1,515 (+19.7%)

Gloucester County

Population

291,165304,504

Median household income

$87,283$102,807

Median home value

$219,700$283,500

Median gross rent

$1,225$1,480

Mercer County

Population

367,922383,286

Median household income

$81,057$96,333

Median home value

$291,100$351,000

Median gross rent

$1,266$1,515

Age & race/ethnicity

Age distribution (share)

	Gloucester County	Mercer County
Under 5	5.0%	5.6%
5 to 17	16.4%	16.3%
18 to 24	9.8%	10.4%
25 to 34	12.3%	12.4%
35 to 44	12.8%	13.0%
45 to 54	13.2%	13.6%
55 to 64	14.1%	13.1%
65 to 74	10.1%	9.2%
75 and over	6.4%	6.5%

Race & ethnicity (share)

	Gloucester County	Mercer County
White (non-Hispanic)	75.2%	44.2%
Black or African American	10.1%	18.3%
American Indian & Alaska Native	0.0%	0.1%
Asian	3.0%	12.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.4%	0.3%
Two or more races	3.3%	2.8%
Hispanic or Latino	7.8%	22.2%

Educational attainment (age 25+)

Share of adults 25+

	Gloucester County	Mercer County
No high school diploma	6.0%	10.1%
High school graduate	31.1%	24.5%
Some college or associate's	27.1%	20.5%
Bachelor's degree	23.6%	24.3%
Graduate or professional degree	12.2%	20.6%

Commute to work

How workers get to work (share)

	Gloucester County	Mercer County
Drove alone	76.1%	61.5%
Carpooled	6.5%	9.2%
Public transit	1.7%	5.2%
Walked	1.3%	3.5%
Bicycle	0.2%	0.7%
Worked from home	13.1%	17.8%
Other means	1.1%	2.1%

Housing

Units in structure (share)

	Gloucester County	Mercer County
1-unit, detached	73.5%	47.5%
1-unit, attached	7.7%	20.6%
2 to 4 units	5.5%	8.5%
5 to 19 units	6.2%	12.2%
20 or more units	4.8%	10.8%
Mobile home & other	2.3%	0.5%

Poverty & households

	Gloucester County	Mercer County
Poverty rate	7.6%	11.1%
Average household size	2.67	2.58
Mean commute (minutes)	29	28
Median year structure built	1979	1967