08561 ZIP Code — Windsor, NJ

Mercer County, New Jersey

ZIP code 08561 is located in Windsor, New Jersey, within Mercer County. It covers approximately 1.14 square miles and serves a population of 328 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 609.

About ZIP code 08561

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $430,900. Owner-occupancy sits near the national average at 46%.

The gap between median ($54,318) and mean household income suggests income inequality — a small number of higher earners pull the average up.

The dominant occupation class is service, with education and healthcare as the leading industry.

Educational attainment is near the national average, with 30% of residents holding a bachelor's degree or higher.

Notable community characteristics include disability rates above the national average at 23%.

328

population

1.14

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

08561 ZIP code map

Cities in ZIP code 08561

Below are the cities the US Postal Service accepts for ZIP code 08561. Using any city not on this list may result in mail delivery delays.

City	Status
Windsor	Acceptable

Demographics updated 06/2026

Population
Total population	328
Population density	288 / sq mi
State FIPS	34
County FIPS	021

Geography
Land area	1.14 sq mi
Water area	0.01 sq mi
Latitude	40.2503
Longitude	-74.5826
Timezone	Eastern (ET)
Area code	609

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	33.7%	30.6%	30.2%
$50k – $100k	23.3%	25.8%	26.7%
$100k – $200k	43.0%	28.0%	28.3%
Over $200k	0.0%	15.6%	14.8%

Demographics & statistics

328

Population

288

People per sq mi

50.3

Median age

$54,318

Median household income

$37,084

Per capita income

$430,900

Median home value

Median monthly rent

45.7%

Home ownership

0.0%

Poverty rate

0.0%

Unemployment

Housing units

30.0%

Bachelor's or higher

Age distribution

Male Female

5–9

20–24

35–44

45–54

60–64

65–74

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	44	13.4%
18 and over	284	86.6%
65 and over	108	32.9%
Median age	50.3 years

Race & ethnicity

White 97%

Black or African American 3%

Group	Count	%
White	318	97%
Black or African American	10	3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	33.7%	30.6%	30.2%
$50k – $100k	23.3%	25.8%	26.7%
$100k – $200k	43.0%	28.0%	28.3%
Over $200k	0.0%	15.6%	14.8%

$15k–$25k 21.0%

$50k–$75k 54.3%

$150k–$200k 8.7%

$200k+ 15.9%

Range	% of households
$15k–$25k	21.0%
$50k–$75k	54.3%
$150k–$200k	8.7%
$200k+	15.9%
Median income	$54,318

Housing

Home values

Under $50k 12.7%

$100k–$150k 20.6%

$300k–$500k 54.0%

$500k–$1M 12.7%

Housing overview

Metric	Value
Median home value	$430,900
Median rent / month	$0
Owner occupied	45.7%
Renter occupied	54.3%
Vacant	0.0%
Single-family detached	60.1%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.0
Avg household size (owned)	2.41

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	0.0%
1980–1989	0.0%
1970–1979	0.0%
1960–1969	39.9%
1950–1959	8.7%
1940–1949	0.0%
1939 or earlier	51.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	45.7%
3 bedrooms	32.6%
4 bedrooms	21.7%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	15.2%
2 vehicles	84.8%
3 or more	0.0%

Heating fuel

Fuel type	%
Utility gas	39.1%
Fuel oil	60.9%

Households & families

Household type	Count	%
Married-couple family	89	64.5%
Cohabiting couple	0	0.0%
Male householder, no spouse	20	14.5%
Female householder, no spouse	29	21.0%
Households with children under 18	22	15.9%
Households with seniors (65+)	96	69.6%
Average household size	2.30

Marital status

Status	Male	Female
Never married	8.4%	54.5%
Married	74.8%	35.8%
Separated	0.0%	0.0%
Widowed	0.0%	9.7%
Divorced	16.8%	0.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 3.7%

HS graduate 24.9%

Some college, no degree 35.5%

Associate's degree 6.0%

Bachelor's degree 19.4%

Graduate / professional 10.6%

Metric	%
HS diploma or higher	96.3%
Bachelor's or higher	30.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	22	50.0%
Elementary school	22	50.0%
High school	0	0.0%
College / grad school	0	0.0%

Employment

Industry of employment

Education & healthcare 54.5%

Professional & management 29.4%

Manufacturing 9.1%

Retail trade 7.0%

Occupation

Category	%
Management, business & arts	31.5%
Service	47.6%
Sales & office	7.0%
Natural resources & construction	0.0%
Production & transportation	14.0%

Employment type

Type	%
Private sector	61.5%
Government	38.5%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	93.0%
Carpool	0.0%
Public transit	7.0%
Walk	0.0%
Work from home	0.0%
Other means	0.0%
Avg commute (minutes)	0.0

Poverty

All people 0.0%

Under 18 years 0.0%

18 and over 0.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	20.3%
Retirement income	14.5%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	24.3%
High blood pressure	0.0%
High cholesterol	0.0%
Diabetes	7.0%
Heart disease	4.8%
Stroke	2.0%
Asthma	8.3%
Arthritis	19.0%
Kidney disease	2.2%
Pulmonary disease	3.7%
Cancer	6.5%

Behavior / access	%
Smoking	9.4%
Binge drinking	17.2%
No physical activity	13.9%
Less than 7 hrs sleep	30.1%
Depression	16.1%
Fair or poor health	7.3%
Poor mental health	11.3%
Poor physical health	6.1%
No health insurance	8.3%
Visited doctor (checkup)	75.1%
Visited dentist	75.6%
Cholesterol screening	0.0%
Teeth loss	6.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	12	4.2%

Disability	%
Any disability	22.9%
Under 18	0.0%
18–64 years	0.0%
65 and over	69.4%

Health insurance coverage

Type	%
Private insurance	97.0%
Public insurance	22.3%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	328	100.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	328	100.0%
Born in same state	318	97.0%
Born in different state	249	75.9%
Foreign born	10	3.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	50	15.2%

Ancestry	Count	%
Italian	12	3.7%

Technology access

Metric	% of households
Computer access	42.1%
Internet access	94.2%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 08561

What city is ZIP code 08561 in?

ZIP code 08561 is primarily assigned to Windsor, New Jersey.

What county is ZIP code 08561 in?

ZIP code 08561 falls within Mercer County, New Jersey.

Does ZIP code 08561 have an older population?

33% of residents in ZIP code 08561 are 65 or older, above the national average of ~17%.

What is the typical home value in ZIP code 08561?

The median home value in ZIP code 08561 is $430,900.

What is the population of ZIP code 08561?

ZIP code 08561 has an estimated population of 328 residents, with a density of 288 people per square mile.

What is the median household income in ZIP code 08561?

The median household income in ZIP code 08561 is $54,318, below the national median of ~$75,000.

What timezone is ZIP code 08561 in?

ZIP code 08561 observes the EST timezone.