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Hamilton Square, NJ
Census-designated place in Mercer County, New Jersey. ZIP codes: 08690.
Population
11,622
Land area
4.3sq mi
People per sq mi
2,718
ZIP codes
1
Hamilton Square and its ZIP codes
Hamilton Square at a glance
- Hamilton Square is about 2.1 times as dense as New Jersey as a whole.
- By population, it ranks 122nd among 700 cities and towns in New Jersey.
- The median household income is $138,162, 33% above the New Jersey median of $103,556.
- A typical owner-occupied home is valued at $397,000 (13% below New Jersey) and median rent is $2,139 a month.
Local data for Hamilton Square, NJ
Counts from official public data
Housing and community stats
Hamilton Square, NJ, American Community Survey 2020-2024
Median household income
$138,162
Poverty rate
2.2%
Median home value
$397,000
Median rent
$2,139/mo
Homeownership
95.6%
Bachelor's or higher
46.4%
Median age
44.9
Average commute
25.5 min
Largest reported origins and ancestries: Italian Americans (3,271), Irish Americans (2,633), German Americans (1,698).
Economy and federal money
Jobs, pay, income and spending are for Mercer County. PPP loans are for Hamilton Square.
Unemployment rate
4.2%
Sep 2026, -1.7 pts in a year
Average annual pay
$94,418
261,312 jobs, 2025
Income per person
$87,068
BEA, 2024
Federal spending
$4.7B
FY 2026, $12,169 per person
PPP loans
$54M
482 loans, 5,269 jobs reported
How people get to work
Hamilton Square, NJ, workers 16 and older. American Community Survey 5-year estimates
- Drove alone66.5%
- Carpooled11.0%
- Public transit1.6%
- Walked1.1%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other0.3%
- Worked from home19.4%
Average one-way commute: 25.5 minutes for people who do not work from home.
Environment and hazard risk
Hamilton Square, NJ, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: strong wind
Storm events since 1996
1,115
Countywide, mostly thunderstorm wind
Flood insurance policies
1,294
1.2% of homes, county
July high / Jan low
87° / 21°F
47.5 inches of rain a year
Health statistics
Share of adults in Hamilton Square, NJ, CDC PLACES estimates
Obesity
22.5%
U.S. 33.3% -10.8 pts
Diabetes
9.0%
U.S. 12.1% -3.1 pts
Smoking
9.0%
U.S. 12.8% -3.8 pts
Uninsured (18-64)
6.9%
U.S. 11.1% -4.2 pts
ZIP codes in Hamilton Square
1 in or overlapping Hamilton Square. Population shown
Cities near Hamilton Square
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Robbinsville CenterCensus-designated place | 1.5 mi | 0.6 |
| MercervilleCensus-designated place | 2.3 mi | 3.7 |
| YardvilleCensus-designated place | 2.8 mi | 4.1 |
| White HorseCensus-designated place | 3.7 mi | 3.1 |
| WindsorCensus-designated place | 4 mi | 1.1 |
| GrovevilleCensus-designated place | 4.2 mi | 2.2 |
| AllentownBorough | 4.9 mi | 0.6 |
| TrentonCity | 5.2 mi | 7.6 |
| CrosswicksCensus-designated place | 5.8 mi | 1.8 |
| BordentownCity | 6.2 mi | 0.9 |
| LawrencevilleCensus-designated place | 6.6 mi | 1 |
| Princeton JunctionCensus-designated place | 6.7 mi | 1.8 |
| Morrisville, PABorough | 6.9 mi | 1.7 |
| The College of New JerseyCensus-designated place | 7 mi | 0.4 |
| HightstownBorough | 7.3 mi | 1.2 |
| FieldsboroBorough | 7.5 mi | 0.3 |
Frequently asked questions
- What county is Hamilton Square, NJ in?
- Hamilton Square is in Mercer County, New Jersey.
- What ZIP codes are in Hamilton Square, NJ?
- ZIP codes in or overlapping Hamilton Square include 08690.
- What is the population of Hamilton Square, NJ?
- About 11,622 people live in Hamilton Square, based on American Community Survey 5-year estimates.
- What cities are near Hamilton Square?
- Nearby places include Robbinsville Center (1.5 mi), Mercerville (2.3 mi), Yardville (2.8 mi), White Horse (3.7 mi), Windsor (4 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023