Spotswood, NJ

Borough in Middlesex County, NJ, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

8,171

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

years ∙ half population younger than 46, half older

Diversity Index

42.1%

chance two random people differ in race and ethnicity

Nativity

12.5%

foreign-born population

87.5%Native

12.5% Foreign-born

Geographic Context

Location, size, and surroundings

About

Spotswood is a borough within Middlesex County, New Jersey, United States.

Location

Borough in Middlesex County, NJ, US

Co-ordinates

DEC40.393613° N, 74.392737° W

DMS40° 23′ 37.01″ N, 74° 23′ 33.85″ W

Population Density & area

3,537/sq mi (1,364/km²)

Total Area

2.42 sq mi (6.27 km²)

Land Area

2.31 sq mi (5.99 km²) · 95.5%

Water Area

0.11 sq mi (0.28 km²) · 4.5%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

46.1% male

Male 46.1%

Female 53.9%

males per 100 females

Spotswood 85.5

Middlesex County 98.7

New Jersey 96.9

Nativity

12.5%

foreign-born population

87.5%Native

12.5% Foreign-born

% Foreign-born

Spotswood 12.5%

Middlesex County 35.4%

New Jersey 23.9%

Age Distribution

How the population is spread across age groups

Median Age

years ∙ half population younger than 46, half older

Spotswood

Middlesex County

39.5

New Jersey

40.1

Dependency ratio

65.8

dependents per 100 working-age adults

Spotswood 65.8

Middlesex County 60.3

New Jersey 63.9

AGE DISTRIBUTION

Distribution of age group

Median age

	Spotswood	Middlesex County	New Jersey
Age Group
Children (Under 18)	17.4%	21.5%	21.8%
Working age (18-64)	60.3%	62.4%	61%
Senior (65+)	22.3%	16.1%	17.2%
Dependency ratio
Total dependency ratio	65.8	60.3	63.9
Child dependency ratio	28.9	34.4	35.7
Old-age dependency ratio	36.9	25.9	28.2

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

74.3%

Black

1.5%

Asian

6.6%

Hispanic

14.9%

Other

2.7%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

42.1%

chance two random people differ in race and ethnicity

Spotswood 42.1%

Middlesex County 72.9%

New Jersey 66.4%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Spotswood population

	Spotswood	Middlesex County	New Jersey
Hispanic or Latino	14.9%	23.6%	22.5%
Mexican	0.7%	3.3%	2.6%
Puerto Rican	6%	5%	5.1%
Cuban	1%	0.7%	1%
Other Hispanic / Latino	7.3%	14.6%	13.8%
Not Hispanic or Latino	85.1%	76.4%	77.5%
One race	82.9%	73.5%	74%
White	74.3%	37.5%	50.9%
Black or African American	1.5%	9.7%	12.2%
American Indian and Alaska Native	0%	0.1%	0.1%
Asian	6.6%	25.4%	10%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	0.4%	0.8%	0.8%
Two or more races (Multiracial)	2.2%	2.9%	3.5%

Household & Families Composition

Household size, type, and family structure

Household structure

70.1% family

Family 70.1%

Non family 29.9%

% family households

Spotswood 70.1%

Middlesex County 71.5%

New Jersey 67.8%

Average household size

2.47

persons per household

Spotswood

2.47

Middlesex County

2.75

New Jersey

2.62

Household & Family COMPOSITION

Households

Percentage of Spotswood population

	Spotswood	Middlesex County	New Jersey
Total households	3,307	307,782	3,507,701
Average houshold size	2.47	2.75	2.62
Family households	2,319	219,936	2,377,513
Average family size	3	3.25	3.19
Married couple family	1,771	167,975	1,746,187
Other families	548	51,961	631,326
Male householder	89	15,202	178,050
Female householder	459	36,759	453,276
Non-family households	988	87,846	1,130,188
One-person households	825	70,280	927,585
Male householder	286	30,340	394,706
Senior (65+) living alone	177	9,612	130,069
Female householder	539	39,940	532,879
Senior (65+) living alone	329	22,944	290,265
Other living arrangements	163	17,566	202,603

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

3,344

housing units

Spotswood 3,344

Middlesex County 317,979

New Jersey 3,791,354

Occupancy status

98.9% occupied

Occupied 98.9%

Vacant 1.1%

vacancy rate

Spotswood 1.1%

Middlesex County 3.2%

New Jersey 7.5%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

74.4%

Single family houses

74.4%

Apartments in multi-unit structures

12.1%

Mobile homes

13.6%

Boat, RV, van, etc

Median Year Built

1967

Half of houses were built before 1967, and half after.

Historic ∙ 1939 or earlier

4.8%

Postwar & mid-century ∙ 1940 - 1969

52.4%

Late 20th century ∙ 1970 - 1999

35.2%

Modern ∙ 2000 or later

7.6%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Spotswood	Middlesex County	New Jersey
Rooms per unit
Median rooms	6	5.5	5.7
1–3 rooms	13.2%	16.8%	16.4%
4–6 rooms	48.4%	48.1%	46.2%
7+ rooms	38.3%	35.1%	37.4%
Bedrooms
No bedroom / studio	0.9%	2.6%	3.1%
1 bedroom	10.7%	14.6%	14.1%
2 bedrooms	25.7%	27.2%	25.6%
3 bedrooms	39.7%	30.1%	31.5%
4+ bedrooms	22.9%	25.4%	25.6%
At a glance
Median year built	1967	1974	1970
Total housing units	3,344	317,979	3,791,354

Occupancy Profile

Who is inside and how they use it

Homeownership

86.2% owners

Renter-occupied 13.8%

Owner-occupied 86.2%

homeownership rate

Spotswood 86.2%

Middlesex County 63.6%

New Jersey 63.8%

Average household size

2.63

Owner-occupied

1.42

Renter-occupied

owner-occupied average size

Spotswood 2.63

Middlesex County 2.87

New Jersey 2.75

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Spotswood	Middlesex County	New Jersey
Total occupied units	3,307	307,782	3,507,701
Year moved in
2020 or later	11.3%	21.3%	21.2%
2010 to 2019	32%	38.6%	39%
2000 to 2009	23.8%	18.9%	18%
1999 or earlier	33%	21.1%	21.8%
Occupants per room
1.00 or fewer	99.5%	94.5%	96%
1.01 to 1.50	0.5%	3.7%	2.5%
1.51 or more	0%	1.8%	1.5%
Vehicles availability
No vehicles	9.1%	8%	11.1%
1 vehicle	26.5%	34.5%	35.1%
2 vehicles	38.1%	37.6%	35.5%
3 or more vehicles	26.3%	19.9%	18.3%
House heating fuel used
Gas	85.9%	80.4%	75.5%
Electricity	6.9%	15.3%	16.2%
Solar	0%	0.2%	0.2%
Fuel oil, kerosene etc	4.8%	3.1%	6.4%
All other fuels	2.4%	0.3%	0.8%
No fuel used	0%	0.7%	0.8%
Selected characteristics
Lacking complete plumbing	0%	0.3%	0.3%
Lacking complete kitchen	0%	0.6%	0.8%
No telephone service available	1%	1%	0.8%

Housing Value

What owner-occupied units are worth

Median home value

$369,900

owner-occupied units

Median value(USD)

Spotswood

$369,900

Middlesex County

$462,900

New Jersey

$454,400

Housing Cost Burden

27.2%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

27.2%

Owners without a mortgage

29%

Renters

60.5%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Spotswood	Middlesex County	New Jersey
Property value
Median Value	$369,900	$462,900	$454,400
Under $100,000	8.7%	3.4%	4.3%
$100,000 - $200,000	11.2%	3.2%	6.5%
$200,000 - $300,000	8.9%	8.5%	12.9%
$300,000 - $500,000	51.6%	43.9%	34.2%
$500,000 - $1,000,000	19.2%	37.8%	34.5%
$1,000,000 and more	0.3%	3.3%	7.6%
Owner-occupied households
With a mortgage	49.2%	63.1%	63.9%
Without a mortgage	50.8%	36.9%	36.1%
Median monthly owner costs
With a mortgage	$2,735	$2,877	$2,829
Without a mortgage	$1,241	$1,242	$1,232
Gross rent
Median rent	$1,079	$1,871	$1,720

Education Profile

How educated is the community and how education pays off

Adults with a college degree

36.9%

of adults 25+ with a bachelor's degree or higher

Spotswood 36.9%

Middlesex County 45.6%

New Jersey 43.6%

Adults without a high school diploma

8.1%

of adults (25+) without a high school diploma

Spotswood 8.1%

Middlesex County 10.8%

New Jersey 9.3%

School Enrollment

Who is enrolled in school and at what level

School enrollment

1,828

population (age 3+) enrolled in school

Nursery / Preschool

15.4%

K–12

54.8%

College / Undergraduate

18.6%

Graduate / Professional

11.2%

College-going rate (18-24 yr olds)

52.9%

of 18-24-year-olds in college or graduate school

Spotswood

52.9%

Middlesex County

61.3%

New Jersey

46.1%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Spotswood	Middlesex County	New Jersey
Total enrolled (age 3+)	1,828	226,211	2,272,695
Nursery / preschool	15.4%	6.3%	7.1%
K–12	54.8%	61.6%	66.6%
Kindergarten	5.2%	4.4%	5.2%
Elementary: Grades 1–4	10.7%	18.2%	19%
Elementary: Grades 5–8	13.4%	19.5%	20.8%
High School: Grades 9–12	25.5%	19.4%	21.6%
College or graduate school	29.8%	32.2%	26.3%
College, undergraduate	18.6%	25.1%	20%
Graduate, professional school	11.2%	7.1%	6.4%
College-going rate · 18-24 yr olds	52.9%	61.3%	46.1%
School type
Public school	79%	78.4%	78.9%
Private school	21%	21.6%	21.1%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

6,176

population 25 years and over

Total adults (25+)

Less than 9th grade

6.6%

9th-12th, no diploma

1.5%

HS graduate

30.4%

Some college no degree

16.3%

Associates degree

8.2%

Bachelors degree

24.8%

Graduate or professional degree

12%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

33.9% · 66.1%

9th-12th, no diploma

38.3% · 61.7%

HS graduate

47.7% · 52.3%

Some college no degree

61.4% · 38.6%

Associates degree

42% · 58%

Bachelors degree

44.5% · 55.5%

Graduate or professional degree

54.6% · 45.4%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Spotswood	Middlesex County	New Jersey
Population (25+)	6,176	601,905	6,523,202
Less than 9th grade	6.6%	5.5%	4.7%
9th–12th, no diploma	1.5%	5.3%	4.6%
High school diploma or GED	30.4%	22.8%	25.3%
Some college, no degree	16.3%	14.1%	15%
Associate's degree	8.2%	6.7%	6.7%
Bachelor's degree or higher	36.9%	45.6%	43.6%
Bachelor's degree	24.8%	26.2%	26.1%
Graduate or professional	12%	19.4%	17.6%
High School or higher	91.9%	89.2%	90.7%

Earnings by education level

percentage as applicable

Median Earnings

$64,858

Median earnings for adults 25+, by level

Less than HS graduate

$48,847

HS graduate

$58,763

Some college or associates

$60,060

Bachelors degree

$74,375

Graduate or professional degree

$72,083

Poverty Rate

3.3%

for ages 25+, with bachelors degree or higher

Less than HS graduate

7.2%

HS graduate

8.8%

Some college or associates

3.1%

Bachelors degree or higher

3.3%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Spotswood	Middlesex County	New Jersey
Median earnings
Population 25+, with earnings	$64,858	$64,998	$63,226
Less than high school graduate	$48,847	$34,914	$33,651
High school graduate (includes equivalency)	$58,763	$44,831	$42,773
Some college or associate's degree	$60,060	$55,647	$51,787
Bachelor's degree	$74,375	$83,748	$81,924
Graduate or professional degree	$72,083	$104,653	$105,179
Poverty rates
Less than high school graduate	7.2%	18.2%	21.1%
High school graduate (includes equivalency)	8.8%	10.6%	12.6%
Some college or associate's degree	3.1%	7.1%	8.1%
Bachelor's degree or higher	3.3%	3.2%	3.7%

Insights for Spotswood, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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