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Living in
Hamilton Square.
Hamilton Square is an unincorporated community in Mercer County, NJ. It has no city government: the county runs it, and the Census counts it as its own place.
About
Life in Hamilton Square
Hamilton Square is a community of 11,643 people in New Jersey. The median household income is $138,162, median rent runs about $2,139 per month, and median home values are around $397,000. The unemployment rate is 5.3%.
Hamilton Square at a Glance
Population, income, housing and more
Median Age
44.9 yrs
Poverty Rate
2.2%
Foreign-Born
12.7%
Broadband Internet
96.3%
of households
Population Growth
-2.9%
recent change · Census Bureau
Median household income
Demographics12.7% foreign-born, most often from Ecuador
Who lives in Hamilton Square: race and ethnicity, ages, households, languages and countries of origin
In Hamilton Square, the largest foreign-born group is from Ecuador (14.9%), and 6.6% of residents speak Spanish at home.
Under 18
18.6%
of residents
65 and Older
23.2%
of residents
Households with Kids
26.9%
anyone under 18
Living Alone
20.8%
of households
Married Couples
66.8%
of households
Avg Household Size
2.67
people
Top countries of origin (foreign-born)
Languages Spoken at Home
Cost of Livingrent 24% above NJ average
Rent, home values, and income in Hamilton Square
In Hamilton Square, rent runs 24% above the NJ average, and home values are 13% below the NJ average.
Median rent (per month)
Median home value
Rent Burdened
53.2%
spending 30%+ of income on rent
Severely Rent Burdened
22.9%
spending 50%+
Cost of Living Index
103.2
metro area (BEA) · US avg = 100
Median Property Tax
$9,289
per year, owner-occupied homes
Homeowners
95.6%
of occupied homes are owned
Typical Home Built
1967
median year built
Vacant Homes
2.3%
of housing units
Jobs & Economyunemployment about average for NJ
Unemployment in Hamilton Square
Unemployment in Mercer County, which includes Hamilton Square, is close to the NJ average.
Unemployment rate
Hamilton Square: Mercer County rate (county-wide) · BLS annual average
Unemployment Rate — 10 Year Trend
Mercer County (county-wide) · Annual averages
Hamilton Square is about 3% of Mercer County’s population, so county-wide figures may differ from local conditions.
What Hamilton Square Residents Do for Work · share of employed residents by industry
City residents, wherever they work
Commute25.5 min avg
How Hamilton Square residents get to work, and the nearest airports
In Hamilton Square, most residents drive alone to work (67%), and 70% get there in under 30 minutes.
How People Get to Work
Commute Time Distribution
Nearest airports · with airline service
- 9 mi
Trenton Mercer Airport (TTN)
Regional airport · few flights162k passengers boarded in 2025
- 39 mi
Philadelphia International Airport (PHL)
Major hub14.8M passengers boarded in 2025
Straight-line distance. Size is the FAA’s hub category, based on passenger traffic: regional airports may have only a few flights a day.
Safetyviolent crime 51% below national average
Crime rates for 2025
Violent crime in the area policed by the Hamilton Township Police Department, Mercer County, which covers Hamilton Square, runs 51% below the national average.
Violent Crime Rate
160.2
per 100,000 residents
Below average (329 national, 2025)
Property Crime Rate
1,979.7
per 100,000 residents
Above average (1,552 national, 2025)
Policed by Hamilton Township Police Department, Mercer County (township-wide rate)
Natural DisastersThunderstorm Wind most common — 19 events in 2025
Natural hazard risk, storms and earthquakes
FEMA National Risk Index
Relatively High
95.4 / 100
Compares expected losses from natural hazards, social vulnerability and community resilience against every US county (higher = more risk).
Mercer County, county-wide · FEMA NRI December 2025
In Mercer County, which includes Hamilton Square, the most common type is thunderstorm wind, with 19 recorded events in 2025.
Most common events:
Storm events by year
| Year | Events | Top Type | Property Damage |
|---|---|---|---|
| 2025 | 19 | Dense Fog | None reported |
| 2024 | 21 | Dense Fog | $40,000 |
| 2023 | 26 | Thunderstorm Wind | $10,000 |
| 2022 | 18 | Winter Weather | None reported |
| 2021 | 30 | Thunderstorm Wind | $50.0M |
| 2020 | 18 | Thunderstorm Wind | None reported |
| 2019 | 23 | Thunderstorm Wind | None reported |
| 2018 | 21 | Flash Flood | None reported |
Property damage is the National Weather Service's estimate filed with each event. “None reported” means the events were logged with $0 damage; “Not estimated” means no estimate was filed. Storms covering several counties aren't counted here, since NOAA doesn't split their damage by county.
0 earthquakes of magnitude 2.5+ within 100 miles in the past year
Mercer County, county-wide
Hamilton Square is about 3% of Mercer County’s population, so county-wide figures may differ from local conditions.
Air Quality43 median AQI — Good
Days by air quality category (2025)
Air quality in Mercer County, which includes Hamilton Square, is typically good — 255 good-air days per year.
Median AQI
43
Good Days
255
per year
Moderate Days
104
per year
Unhealthy Days
0
per year
Mercer County, county-wide
Hamilton Square is about 3% of Mercer County’s population, so county-wide figures may differ from local conditions.
Climate84°F summers, 24°F winters
30-year climate averages (1991–2020) — monthly temperatures and precipitation
Hamilton Square has warm summers (avg high 84°F) and cold winters (avg low 24°F).
Spring (Mar–May)
62°/39°F
avg high / low
Summer (Jun–Aug)
84°/61°F
avg high / low
Fall (Sep–Nov)
67°/43°F
avg high / low
Winter (Dec–Feb)
43°/24°F
avg high / low
Annual Precipitation
48.0"
Annual Snowfall
23.7"
Hot Days/Year
26
days above 90°F
Freeze Days/Year
114
days below 32°F
Rainy Days/Year
126
Average month
Show month-by-month table ↓Hide table ↑
| Month | High | Low | Precip |
|---|---|---|---|
| Jan | 41°F | 21°F | 3.46" |
| Feb | 43°F | 23°F | 2.61" |
| Mar | 51°F | 30°F | 4.28" |
| Apr | 63°F | 39°F | 3.67" |
| May | 73°F | 48°F | 4.07" |
| Jun | 82°F | 58°F | 4.63" |
| Jul | 87°F | 63°F | 4.82" |
| Aug | 85°F | 61°F | 4.29" |
| Sep | 78°F | 54°F | 4.15" |
| Oct | 66°F | 42°F | 3.98" |
| Nov | 55°F | 33°F | 3.26" |
| Dec | 46°F | 27°F | 4.23" |
Healthcare
Hospitals, ratings, and health insurance in Hamilton Square
Uninsured
2.9%
of residents
No hospitals inside Hamilton Square's limits — nearest hospitals · within 15 miles
Robert Wood Johnson University Hospital at Hamilton
Acute Care Hospitals · ER available · 1.2 mi away · Hamilton
Capital Health Regional Medical Center
Acute Care Hospitals · ER available · 4.8 mi away · Trenton
University Medical Center of Princeton at Plainsboro
Acute Care Hospitals · ER available · 7.7 mi away · Plainsboro
Adult Health · vs. the typical US place
Share of adults. Modeled estimates, not counted cases. “US” = the typical US place.
Medicare-certified hospitals only. Doesn’t include clinics, urgent care, or freestanding ERs.
Education12.9:1 student/teacher ratio
Schools and degree attainment in Hamilton Square
Hamilton Square's student/teacher ratio is 12.9:1 (lower than the national average of 16:1), and 46.4% of adults 25+ hold a bachelor's degree or higher.
Public Schools
6
within city limits
Private Schools
0
within city limits
College Degree Rate
46.4%
adults 25+ with bachelor's or higher
Student/Teacher Ratio
12.9:1
National avg 16:1
Schools located within city limits (2023) — school-level metrics change slowly year to year
Colleges Near Hamilton Square (within 15 miles)
Thomas Edison State University
5.7 mi awayPublic · 4-year · 6,707 students · in-state tuition $7,044 · 42% graduate · median earnings $75,164 (10 yrs after entry)
Private nonprofit · 4-year · 5,709 students · in-state tuition $65,510 · 98% graduate · median earnings $133,523 (10 yrs after entry)
Degree-granting colleges with 100+ students, placed by campus location (main campuses only — branch campuses are reported under their parent school)
Parks & Recreationclosest: Washington-Rochambeau Revolutionary Route National Historic Trail, 14 mi
Nearby national parks, recreation areas and public libraries for Hamilton Square
Hamilton Square has 8 nearby national parks or recreation areas, closest being Washington-Rochambeau Revolutionary Route National Historic Trail (14 mi away).
Nearby National Parks & Recreation Areas
Washington-Rochambeau Revolutionary Route National Historic Trail
National Historic Trail
14 mi awayNew Jersey Pinelands National Reserve
National Reserve
20 mi awayLower Delaware National Wild and Scenic River
National Wild and Scenic River
21 mi awayEdgar Allan Poe National Historic Site
National Historic Site
32 mi awayIndependence National Historical Park
National Historical Park
32 mi awayThaddeus Kosciuszko National Memorial
National Memorial
32 mi awayGloria Dei Church National Historic Site
National Historic Site
33 mi awayMorristown National Historical Park
National Historical Park
38 mi awayCities Near Hamilton Square
The closest cities within 60 miles
Planning a move to Hamilton Square?
Read our full moving guide — what it's really like to live here.
Hamilton Square FAQ
Is Hamilton Square, New Jersey affordable?⌄
Hamilton Square's median rent is $2,139/month, which is significantly above the national average. The median household income is $138,162/year. Median home value is $397,000.
Is Hamilton Square, New Jersey safe?⌄
Hamilton Square is policed by the Hamilton Township Police Department, Mercer County, whose violent crime rate across its service area was 160 per 100,000 residents in 2025, which is well below the national average — one of the safer cities in the country of 329/100k that year. Property crime rate is 1980 per 100,000. As with any city, crime rates vary by neighborhood.
What is the job market like in Hamilton Square, New Jersey?⌄
Mercer County, which includes Hamilton Square, has an unemployment rate of 5.3%, which is slightly above the national average of 4.3%.
What is the cost of living in Hamilton Square, New Jersey?⌄
The cost of living in Hamilton Square is primarily driven by housing. Median rent is $2,139/month and median household income is $138,162/year. The median home value is $397,000. About 53% of renters spend more than 30% of their income on housing.
How is the commute in Hamilton Square, New Jersey?⌄
The average commute in Hamilton Square is 26 minutes, which is about average compared to the national average of 26 minutes.
Data from the US Census Bureau, BLS, FBI, NOAA, EPA, Zillow Research and other public sources. Where our data comes from