Mercer County, New Jersey

18 cities & places have their primary county here.

Population: 383,286
Median household income: $96,333
Median home value: $351,000

Mercer County is a county in New Jersey with a population of 383,286. 18 cities and places have their primary county here. The median household income of $96,333 is below the New Jersey median ($101,050).

Between 2019 and 2023, Mercer County's population grew 4.2% from 367,922 to 383,286, while its median household income rose 18.8% from $81,057 to $96,333.

61.5% of workers drive to work alone. 47.5% of homes are single-family detached houses.

Demographics

ACS 2019–2023

Population: 383,286
Median age: 39.2 yrs
Median household income: $96,333
Median home value: $351,000
Median gross rent: $1,515
Housing units: 150,600
Homeownership rate: 61.9%
Bachelor's degree or higher: 44.9%
Unemployment rate: 6.1%

Trends

ACS 5-year · 2019–2023

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

Year	Population	Median household income	Median home value	Median gross rent
2019	367,922	$81,057	$291,100	$1,266
2020	368,085	$83,306	$290,100	$1,311
2021	384,951	$85,687	$295,400	$1,361
2022	383,732	$92,697	$327,600	$1,454
2023	383,286	$96,333	$351,000	$1,515

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.6%

5 to 1716.3%

18 to 2410.4%

25 to 3412.4%

35 to 4413.0%

45 to 5413.6%

55 to 6413.1%

65 to 749.2%

75 and over6.5%

	Count	Share
Under 5	21,529	5.6%
5 to 17	62,515	16.3%
18 to 24	39,713	10.4%
25 to 34	47,435	12.4%
35 to 44	49,747	13.0%
45 to 54	52,035	13.6%
55 to 64	50,300	13.1%
65 to 74	35,212	9.2%
75 and over	24,800	6.5%

Race & ethnicity

	Count	Share
White (non-Hispanic)	169,549	44.2%
Black or African American	70,288	18.3%
American Indian & Alaska Native	308	0.1%
Asian	45,914	12.0%
Native Hawaiian & Pacific Islander	65	0.0%
Some other race	1,086	0.3%
Two or more races	10,807	2.8%
Hispanic or Latino (any race)	85,269	22.2%

Educational attainment (age 25+)

No high school diploma10.1%

High school graduate24.5%

Some college or associate's20.5%

Bachelor's degree24.3%

Graduate or professional degree20.6%

	Count	Share
No high school diploma	26,146	10.1%
High school graduate	63,662	24.5%
Some college or associate's	53,192	20.5%
Bachelor's degree	62,940	24.3%
Graduate or professional degree	53,589	20.6%

Commute to work

Mean travel time to work: 28 min

Drove alone61.5%

Carpooled9.2%

Public transit5.2%

Walked3.5%

Bicycle0.7%

Worked from home17.8%

Other means2.1%

How workers get to work

	Count	Share
Drove alone	111,341	61.5%
Carpooled	16,575	9.2%
Public transit	9,338	5.2%
Walked	6,373	3.5%
Bicycle	1,231	0.7%
Worked from home	32,270	17.8%
Other means	3,795	2.1%

Travel time

	Count	Share
Under 15 min	37,327	25.1%
15 to 29 min	60,055	40.4%
30 to 44 min	25,622	17.2%
45 to 59 min	8,857	6.0%
60+ min	16,792	11.3%

Households

Average household size: 2.58
Poverty rate: 11.1% (40,446 of 365,249)

	Count	Share
Family households	92,966	65.7%
Nonfamily households	48,498	34.3%

Housing

Median year structure built: 1967

Occupancy

	Count	Share
Occupied	141,464	93.9%
Vacant	9,136	6.1%

Tenure (of occupied units)

	Count	Share
Owner-occupied	87,554	61.9%
Renter-occupied	53,910	38.1%

1-unit, detached47.5%

1-unit, attached20.6%

2 to 4 units8.5%

5 to 19 units12.2%

20 or more units10.8%

Mobile home & other0.5%

Units in structure

	Count	Share
1-unit, detached	71,470	47.5%
1-unit, attached	30,988	20.6%
2 to 4 units	12,760	8.5%
5 to 19 units	18,354	12.2%
20 or more units	16,307	10.8%
Mobile home & other	721	0.5%

Geography

County GEOID: 34021
State: New Jersey
Land area: 224 sq mi
Water area: 4.37 sq mi
Center point: 40.2825, -74.7037