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New Jersey ZIP Codes
Mercer County
Trenton, NJ
08620
08620 ZIP Code — Trenton, NJ
Mercer County, New Jersey
ZIP code 08620 is located in
Trenton ,
New Jersey ,
within Mercer County .
It covers approximately 9.01 square miles and serves a population of
12,913 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 609 .
About ZIP code 08620
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $316,300. Owner-occupancy is high at 81%, well above the national average.
Median household income is $111,141. The poverty rate of 6% is below the national average. 41% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 28 minutes is near the national average.
Educational attainment is near the national average, with 29% of residents holding a bachelor's degree or higher.
Overall, ZIP code 08620 reflects a community defined by high homeownership and a significant Social Security-dependent population.
08620 ZIP code map
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Cities in ZIP code 08620
Below are the cities the US Postal Service accepts for ZIP code 08620. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
12,913
Population density
1,433 / sq mi
State FIPS
34
County FIPS
021
Geography
Land area
9.01 sq mi
Water area
0.11 sq mi
Latitude
40.1620
Longitude
-74.6510
Timezone
Eastern (ET)
Area code
609
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
23.4%
30.6%
30.2%
$50k – $100k
28.1%
25.8%
26.7%
$100k – $200k
37.2%
28.0%
28.3%
Over $200k
11.2%
15.6%
14.8%
Demographics & statistics
$111,141
Median household income
$316,300
Median home value
$1,370
Median monthly rent
29.2%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 1,884 14.6%
18 and over 11,029 85.4%
65 and over 2,361 18.3%
Median age 42.0 years
Race & ethnicity
Black or African American
9.1%
Group Count %
White 10,914 82.2%
Black or African American 1,205 9.1%
Hispanic or Latino 369 2.8%
Asian 349 2.6%
Two or more races 268 2%
Other race 177 1.3%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
23.4%
30.6%
30.2%
$50k – $100k
28.1%
25.8%
26.7%
$100k – $200k
37.2%
28.0%
28.3%
Over $200k
11.2%
15.6%
14.8%
Range % of households
Under $10k 4.0%
$10k–$15k 0.7%
$15k–$25k 5.4%
$25k–$35k 3.8%
$35k–$50k 6.2%
$50k–$75k 9.1%
$75k–$100k 15.3%
$100k–$150k 23.5%
$150k–$200k 12.2%
$200k+ 19.9%
Median income $111,141
Housing
Housing overview
Metric Value
Median home value $316,300
Median rent / month $1,370
Owner occupied 81.2%
Renter occupied 18.8%
Vacant 3.0%
Single-family detached 80.9%
Large apartment buildings 1.2%
Mobile homes 0.0%
Median rooms 6.8
Avg household size (owned) 2.89
Year built
Era %
2020 or later 0.0%
2010–2019 0.5%
2000–2009 7.6%
1990–1999 7.5%
1980–1989 10.2%
1970–1979 6.5%
1960–1969 21.3%
1950–1959 24.6%
1940–1949 6.3%
1939 or earlier 15.5%
Bedrooms
Size % of units
No bedroom (studio) 1.1%
1 bedroom 10.2%
2 bedrooms 15.6%
3 bedrooms 37.9%
4 bedrooms 26.9%
5+ bedrooms 8.3%
Vehicles per household
Vehicles % of households
No vehicle 3.3%
1 vehicle 28.8%
2 vehicles 37.3%
3 or more 30.6%
Heating fuel
Fuel type %
Utility gas 81.3%
Electricity 9.3%
Propane / LP gas 0.9%
Fuel oil 7.5%
Solar 1.0%
Households & families
Household type Count %
Married-couple family 2,384 55.9%
Cohabiting couple 263 6.2%
Male householder, no spouse 501 11.7%
Female householder, no spouse 1,117 26.2%
Households with children under 18 1,225 28.7%
Households with seniors (65+) 1,686 39.5%
Average household size 2.73
Marital status
Status Male Female
Never married 47.4% 23.2%
Married 44.8% 54.0%
Separated 0.9% 0.6%
Widowed 1.8% 9.2%
Divorced 5.2% 13.1%
Education
Some college, no degree
18.2%
Graduate / professional
6.1%
Metric %
HS diploma or higher 91.2%
Bachelor's or higher 29.2%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 196 9.6%
Kindergarten 95 4.7%
Elementary school 764 37.4%
High school 420 20.6%
College / grad school 566 27.7%
Employment
Industry of employment
Education & healthcare
24.3%
Professional & management
11.5%
Public administration
8.0%
Arts, food & hospitality
7.6%
Finance & real estate
6.3%
Transportation & utilities
5.0%
Agriculture & mining
0.4%
Occupation
Category %
Management, business & arts 35.2%
Service 16.4%
Sales & office 24.3%
Natural resources & construction 16.5%
Production & transportation 7.6%
Employment type
Type %
Private sector 78.2%
Government 17.6%
Self-employed 3.5%
Unpaid family workers 0.7%
Commute
Method %
Drive alone 82.9%
Carpool 4.2%
Public transit 1.6%
Walk 0.1%
Work from home 10.4%
Other means 1.0%
Avg commute (minutes) 27.5
Poverty
Married-couple families
2.1%
Female-led households
31.5%
Income support
Source % of households
Social Security 41.1%
Retirement income 40.1%
Supplemental Security 6.5%
Cash public assistance 3.8%
Food stamps / SNAP 2.1%
Health indicators
Condition %
Obesity 26.6%
High blood pressure 0.0%
High cholesterol 0.0%
Diabetes 6.7%
Heart disease 4.6%
Stroke 2.0%
Asthma 9.3%
Arthritis 17.7%
Kidney disease 2.1%
Pulmonary disease 4.5%
Cancer 5.3%
Behavior / access %
Smoking 12.8%
Binge drinking 19.4%
No physical activity 17.8%
Less than 7 hrs sleep 34.0%
Depression 18.0%
Fair or poor health 9.6%
Poor mental health 14.2%
Poor physical health 7.1%
No health insurance 15.9%
Visited doctor (checkup) 73.9%
Visited dentist 66.5%
Cholesterol screening 0.0%
Teeth loss 9.9%
Veterans & disability
Veterans Count %
Civilian veterans 452 4.1%
Disability %
Any disability 11.6%
Under 18 5.6%
18–64 years 8.6%
65 and over 25.9%
Health insurance coverage
Type %
Private insurance 85.2%
Public insurance 29.1%
No insurance 4.6%
Uninsured under 19 2.1%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 12,263 95.0%
Spanish 402 3.3%
Other Indo-European 236 1.9%
Asian & Pacific Islander 166 1.4%
Other languages 0 0.0%
Place of birth & citizenship
Origin Count %
Native born (US) 11,825 91.6%
Born in same state 11,480 88.9%
Born in different state 9,747 75.5%
Foreign born 345 2.7%
Naturalized citizen 1,088 8.4%
Not a US citizen 744 68.4%
Ancestry
Ancestry Count %
Italian 2,086 16.2%
French 913 7.1%
Irish 436 3.4%
Arab 270 2.1%
Polish 141 1.1%
Ancestry Count %
English 79 0.6%
Dutch 72 0.6%
Norwegian 44 0.3%
German 21 0.2%
Technology access
Metric % of households
Computer access 33.0%
Internet access 96.4%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 08620
What city is ZIP code 08620 in?
ZIP code 08620 is primarily assigned to Trenton, New Jersey.
What county is ZIP code 08620 in?
ZIP code 08620 falls within Mercer County, New Jersey.
Is ZIP code 08620 mostly owner-occupied?
81% of occupied units in ZIP code 08620 are owner-occupied, well above the national average.
Does ZIP code 08620 have a large retiree population?
41% of households in ZIP code 08620 receive Social Security income, suggesting a significant retiree or disability population.
What is the median household income in ZIP code 08620?
The median household income in ZIP code 08620 is $111,141, above the national median of ~$75,000.
What is the typical home value in ZIP code 08620?
The median home value in ZIP code 08620 is $316,300.
What timezone is ZIP code 08620 in?
ZIP code 08620 observes the EST timezone.
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