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City · 11,622 residents · Mercer County, New Jersey

Hamilton Square , New Jersey

In Hamilton Square, a typical home is worth $397,000 and typical rent is $2,139 a month. Compared with all of Mercer County, typical household income is 37% higher, typical rent is 32% higher, and the share of households that own their home is 33 points higher.

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  • Typical home value

    $397,000

    5% above the county

    13% below New Jersey

    • Hamilton Square
    • Mercer
    • New Jersey

  • Typical rent

    $2,139a month

    32% above the county

    24% above New Jersey

    • Hamilton Square
    • Mercer
    • New Jersey

  • Typical household income

    $138,162a year

    37% above the county

    33% above New Jersey

    • Hamilton Square
    • Mercer
    • New Jersey

  • Households that own their home

    96%

    33 points above the county

    32 points above New Jersey

    • Hamilton Square
    • Mercer
    • New Jersey

Source: U.S. Census Bureau, Average 2020–2024

Hamilton Square is in Mercer County. The FHA loan limit ($541,287 for a one-unit home), the fair market rents and the help on this page are those of all of Mercer County. See the county

Data updated: October 1, 2026 11 official sources

Only here

What sets Hamilton Square apart

What this place has that others do not, from public data, most unusual first.

  1. 96% of households in Hamilton Square own their home, against 62% in Mercer County.

  2. Nearby, in Trenton, the typical home value is $160,700: 60% less than in Hamilton Square ($397,000).

  3. Nearby, in Trenton, the typical rent is $1,294: 40% less than in Hamilton Square ($2,139).

  4. The typical household income in Hamilton Square is $138,162, 37% more than in Mercer County as a whole ($100,645).

  5. The typical rent in Hamilton Square is $2,139 a month, 32% more than in Mercer County as a whole ($1,623).

Sources: U.S. Census Bureau (Average 2020–2024).

The homes here

Housing in Hamilton Square

What homes there are in Hamilton Square, what they cost, how that changed and how people live, from Census figures (2020–2024).

What homes there are

U.S. Census Bureau, ACS 5-year, 2020–2024

Kind of home

The detached house rules in Hamilton Square: 91% of homes, more than in Mercer County (48%).

Year built

In Hamilton Square, half of the homes were built before 1967; in Mercer County, before 1969.

All homes, occupied or empty. A figure the Census cannot measure precisely enough here is not shown.

Census tables: B25024, B25034, B25035, B25041

What it costs here

U.S. Census Bureau, ACS 5-year, 2020–2024

Value of owner-occupied homes
Monthly rent with utilities

With a mortgage

$2,655 a month

Mercer County: $2,615 a month

Without a mortgage

$1,189 a month

Mercer County: $1,136 a month

Owners with a mortgage

66%

Mercer County: 62%

In Hamilton Square, 66% of owners have a mortgage; their typical cost is $2,655 a month, about the same as in Mercer County.

Value: what owners think their home is worth. Rent: rent plus utilities, for homes of every size. The FHA limit is the most an FHA loan (Federal Housing Administration) lends for a one-unit home; the fair market rent (FMR) is the one HUD uses for housing vouchers.

Census tables: B25075, B25063, B25088, B25081

How it changed

U.S. Census Bureau, ACS 5-year, 2015–2019 and 2020–2024

Change since 2015–2019

The typical home value in Hamilton Square rose 31% since 2015–2019, about the same as in Mercer County (30%).

Rents in Hamilton Square rose faster than in Mercer County: 86% since 2015–2019, against 28%.

Housing prices ran ahead of income in Hamilton Square: typical income rose 22%, against +31% for home values and +86% for rent.

Change between two 5-year periods that do not overlap, in each period's dollars, not adjusted for inflation.

Census tables: B25077, B25064, B19013

How people live

U.S. Census Bureau, ACS 5-year, 2020–2024

MeasureHamilton SquareMercer CountyNew JerseyUnited States
Rental vacancy Unreliable estimate2.9%3.5%5.5%
Homeowner vacancy Unreliable estimate0.4%0.7%0.9%
More than one person per room Unreliable estimate3.7%4.0%3.4%
People per household 2.672.562.622.53
Drive alone 67%60%62%69%
Carpool 11%9%8%9%
Public transit Unreliable estimate5%8%3%
Walk or bike Unreliable estimate4%3%3%
Work from home 19%20%17%15%
Other means Unreliable estimate3%2%2%
Typical commute 20 to 29 minutes20 to 29 minutes20 to 29 minutes20 to 29 minutes

A household in Hamilton Square has 2.67 people on average, about the same as in Mercer County (2.56).

The car rules in Hamilton Square: 67% of workers drive to work alone, and the typical trip takes 20 to 29 minutes.

Vacancy: empty homes offered for rent or for sale. Rooms: every room in the home, not only bedrooms. Commute: the minute range of the typical worker.

Census tables: B25004, B25003, B25014, B25010, B08301, B08303

Do the math

What would you pay each month for a home in Hamilton Square?

A typical home is tight for the typical income

We start with a typical home in Hamilton Square, worth $397,000, an FHA loan with 3.5% down and the latest average rate (7.18%). That payment would take 33% of the typical household income in Hamilton Square, which is $138,162 a year. For that payment to be 28% of income, a household would need to earn about $160,965 a year.

The calculator's FHA and conventional loan limits are those of all of Mercer County.

Your numbers

Local data
$

Starts at the typical home value in Hamilton Square. Change it to the price you have in mind.

Loan type
Your credit score

Your score changes which loans apply and FHA's minimum down payment. Your real rate also depends on your credit.

Down payment
%

That is $13,895 (3.5% of the price). The usual minimum for this loan is 3.5%.

This week's average ± a quarter or half point.

Term

National average as of November 5, 2026 (Freddie Mac); your rate may be different.

Adjust advanced details

Estimated monthly payment

Local data

$3,756

at 7.18% · 30 years

Loan amount
$389,809
Total interest
$560,844
Paid off in
November 2056

Includes $6,704 FHA upfront mortgage insurance premium.

Does it fit the income?

  • Comfortable

    up to $3,224 a month

  • Tight

    $3,224 to $4,145 a month

    Your payment · 33%

  • Hard

    more than $4,145 a month

Compared with the typical household income in Hamilton Square ($138,162 a year). Reference: HUD calls paying more than 30% of income for housing a cost burden.

Show the result as
per month$3,756
Principal & interest$2,641
Property tax$774
Home insurance$165
FHA mortgage insurance (MIP)$176

You need at least $13,895 for the down payment, plus closing costs.

Next step

This is an estimate to give you an idea, not a loan offer. Your real payment depends on your rate, your credit, and the insurance and taxes on the home you buy.

The city and its county

Hamilton Square and Mercer County

Hamilton Square is in Mercer County, New Jersey. The U.S. Census Bureau publishes its own numbers for the city: home values, rent, household income, how many households own their home and the property tax. They are American Community Survey estimates (average 2020–2024).

Hamilton Square's own numbers

Typical home value
$397,000
Typical monthly rent
$2,139
Typical yearly household income
$138,162
Households that own their home
96%
Effective property tax rate
2.34%

U.S. Census Bureau, American Community Survey (average 2020–2024).

Numbers for all of Mercer County

FHA limit, one-unit home
$541,287
Conventional limit, one unit
$832,750
HUD fair market rent, 2 bedrooms
$2,242
Price change over 5 years (FHFA)
+68%
Homes in a high flood-risk zone
1.7%

HUD, FHFA and FEMA don't publish these numbers by city.

Other numbers are not published by city, only for the whole county: FHA and conventional loan limits, HUD’s fair market rents, FHFA’s price index and FEMA’s flood data. On this page, those numbers always say they are for all of Mercer County.

Everything about Mercer County

Buying

Buying a home in Hamilton Square

A typical home in Hamilton Square is worth $397,000: 5% above the county and 13% below New Jersey. With the typical household income in Hamilton Square ($138,162 a year), a typical home costs 2.9 times what the household earns in a year.

Years of income to pay for a typical home

The typical home value divided by the typical household income for one year. The lower it is, the less buying weighs.

  • Hamilton Square 2.9 years
  • Mercer 3.8 years
  • New Jersey 4.4 years
  • United States 4.1 years
Source: U.S. Census Bureau, Average 2020–2024

How prices have changed in Mercer County

According to FHFA’s house price index, home prices in Mercer County rose 87% in the 10 years through 2025.

FHFA does not publish this index by city: these are the numbers for all of Mercer County.

Period County New Jersey U.S.
Last year (2025) +5.7% +6.2% +2.9%
5 years (2020–2025) +68% +63% +47%
10 years (2015–2025) +87% +88% +85%

The index follows the price of the same homes over time (sales and appraisals with Fannie Mae and Freddie Mac loans). It is not the average price of a home. FHFA considers its annual county indexes experimental. Source: FHFA, 2025 data

Hamilton Square next to Mercer County, New Jersey and the U.S.

Three numbers side by side. “Typical” means the median: half are above it and half below.

Typical home value
  • Hamilton Square $397,000
  • Mercer $377,700
  • New Jersey $454,400
  • United States $332,700
Typical monthly rent
  • Hamilton Square $2,139
  • Mercer $1,623
  • New Jersey $1,720
  • United States $1,413
Typical yearly household income
  • Hamilton Square $138,162
  • Mercer $100,645
  • New Jersey $103,556
  • United States $80,734
See the full table
Hamilton Square next to Mercer County and New Jersey
Measure Hamilton Square Mercer County New Jersey U.S.
Typical home value $397,000 $377,700 $454,400 $332,700
Typical monthly rent $2,139 $1,623 $1,720 $1,413
Typical yearly household income $138,162 $100,645 $103,556 $80,734
Households that own their home 96% 62% 64% 65%
Typical yearly property tax $9,289 $8,909 $9,590 $3,119
Effective property tax rate 2.34% 2.36% 2.11% 0.94%
Renters with high rent for their income 53% 50% 52% 51%

“Typical” means the median: half are above and half are below. ▲ and ▼ say whether the city is above or below Mercer County. “High rent” is the Census measure: renter households that pay 30% or more of their income in rent.

Four ways to pay for a typical home in Hamilton Square

For a typical $397,000 home in Hamilton Square, at Freddie Mac's average rate (7.18% as of November 5, 2026) over 30 years. The monthly payment adds principal and interest, Hamilton Square's typical property tax, an example home insurance and mortgage insurance when it applies.

  • FHA, 3.5% down $3,756a month

    Least cash to close
    Down payment
    $13,895
    Cash to close
    $25,805
    Rate
    7.18%
    Mortgage insurance
    FHA MIP · $176

  • Conventional, 5% down $3,683a month

    Down payment
    $19,850
    Cash to close
    $31,760
    Rate
    7.18%
    Mortgage insurance
    PMI · $189

  • Conventional, 20% down, no PMI $3,091a month

    Down payment
    $79,400
    Cash to close
    $91,310
    Rate
    7.18%
    Mortgage insurance
    None

  • ITIN, 15% down (example) $3,458a month

    Down payment
    $59,550
    Cash to close
    $71,460
    Rate
    8.18%
    Mortgage insurance
    None

The option that asks for the least cash to close is FHA, 3.5% down.

  • Cash to close = down payment plus 3% of the price in closing costs (example).
  • Minimum score: FHA requires 580 or higher for the minimum down payment (HUD Handbook 4000.1). * Fannie Mae requires 620 when a loan is underwritten by hand; its automated system has no fixed minimum.
  • The ITIN row is an example with a rate 1 percentage point higher: ITIN loans follow no federal rule and each lender sets its own down payment and rate. Nothing in this table promises an approval.

How much house can I afford? Estimate closing costs

Taxes and floods

Two costs that change from place to place

Property tax and flood insurance raise or lower what you pay each month. Here are the numbers for Hamilton Square and for Mercer County.

Property tax

Effective rate in Hamilton Square

2.34%of the home’s value each year

$9,289 a year for the typical owner in Hamilton Square.

  • Hamilton Square 2.34%
  • Mercer 2.36%
  • New Jersey 2.11%

What New Jersey publishes ANCHOR, Senior Freeze and Stay NJ: one combined application (New Jersey Division of Taxation)

Exemptions and deadlines in New Jersey

Flood risk in Mercer County

FEMA does not publish these numbers by city: they are for all of Mercer County.

Homes in the high-risk zone
1.7%
1,826
Of those, with NFIP insurance
42%
County New Jersey U.S.
Homes in the high-risk zone 1.7% 6.7% 3.5%
Of those, with NFIP insurance 42% 63% 48%

Most homeowners insurance policies do not cover flood damage.

Look up your address on FEMA’s map

Renting

Renting in Hamilton Square

Typical rent in Hamilton Square is $2,139 a month: 32% above the county. In Hamilton Square, 53% of renter households pay 30% or more of their income in rent.

HUD publishes a fair market rent for all of Mercer County, by unit size. To pay the 2-bedroom one ($2,242 a month) without spending more than 30% of your income, you would need to earn $43.12 an hour working full time.

HUD fair market rent for all of Mercer County

What you need to earn to pay it without spending more than 30% of income, working full time.

Size Fair rent a month Hourly wage Yearly income
Studio $1,561 $30.02 $62,440
1 bedroom $1,764 $33.92 $70,560
2 bedrooms $2,242 $43.12 $89,680
3 bedrooms $2,741 $52.71 $109,640
4 bedrooms $3,081 $59.25 $123,240

Includes basic utilities. It isn't the lowest or highest rent: it's a reference point. Source: HUD, Fiscal year 2027

By ZIP code

Fair market rent by ZIP code in Hamilton Square

HUD also publishes a fair market rent for each ZIP code (Small Area FMR, fiscal year 2027). Hamilton Square is in ZIP code 08690.

For 2 bedrooms it is $2,380: $138 more than the fair market rent for Mercer County ($2,242).

  • 08690 $2,380$2,910

1 of these ZIP codes crosses the city line: HUD sets the rent by ZIP code, not by city. A ZIP code counts for Hamilton Square when at least 50% of its land is inside the city or it covers at least 15% of the city (Census 2020 boundaries). Source: Small Area Fair Market Rents (HUD) Fiscal year 2027 Small Area Fair Market Rents (HUD) Source: Census Bureau ZCTA-to-place relationship file Data from 2020 data Census Bureau ZCTA-to-place relationship file

Is your rent high for your ZIP?

Free help

Help to buy or rent in Hamilton Square

You do not have to do this alone. A HUD-approved housing counseling agency helps for free or at low cost: getting ready to buy, understanding your credit, or solving a problem with your rent.

There are 2 HUD-approved agencies with an office in Mercer County; 1 says it serves in Spanish.

A young man and a young woman look something up together on a laptop.

HUD counseling is free or low-cost

Assistance programs in Hamilton Square

No down payment, repair or rent-help program on our list is for Hamilton Square or Mercer County. The ones below are statewide in New Jersey: they work in Hamilton Square the same as in the rest of the state.

Which programs do I qualify for? All programs in New Jersey

Housing counselors near Hamilton Square

The HUD-approved agencies closest to the center of Hamilton Square, in a straight line, nearest first. If one says it serves in Spanish, its card says so.

  • Isles, Incorporated

    10 Wood St, Trenton · 6 miles away · Spanish

    Also serves in Cantonese.

    • Mortgage delinquency and default
    • Mortgage delinquency workshops
    • and 2 more
    (609) 341-4700

  • Housing & Community Development Network of New Jersey

    145 West Hanover Street, Trenton · 6 miles away

    (917) 974-5922

  • Navicore Solutions

    200 US Highway 9, Manalapan · 19 miles away · Spanish

    • Mortgage delinquency and default
    • Budget and financial counseling
    • and 5 more
    (732) 409-6281

Every agency in Mercer County All counseling agencies in New Jersey

Help in Spanish near Hamilton Square

2 of the 3 agencies on this list say they serve in Spanish.

Ask for service in Spanish

When you call, say “Spanish, please” or ask if someone speaks Spanish. If not, ask whether they offer an interpreter.

Housing authorities of Hamilton Square

In HUD’s record, no housing authority with an office in Mercer County is named for Hamilton Square or Mercer County.

5 other authorities have an office in Mercer County: see the list Source: HUD

Cities

Other cities in Mercer County

These cities are also in Mercer County. They share its loan limits and fair market rents, but home values and rent change from one to the next.

Everything about Mercer County Housing in New Jersey

Nearby cities

The cities closest to Hamilton Square, with the typical home value.

Neighboring counties

If Mercer County is out of reach, look next door. Each number is that county's own.

Keep going

Guides for your next step

Short explanations, in plain language and with official sources, for buying or renting in Hamilton Square.

All guides
A smiling girl holds up a small mushroom she found on a forest outing.

Questions

Housing questions about Hamilton Square

Short answers with the numbers for Hamilton Square and all of Mercer County. If your case is different, a HUD-approved counseling agency can guide you for free or at low cost.

How much does a typical home cost in Hamilton Square?

The typical home value in Hamilton Square is $397,000, according to the U.S. Census Bureau (average 2020–2024). For comparison, in Mercer County it is $377,700.

How much does it cost to rent in Hamilton Square?

Typical rent in Hamilton Square is $2,139 a month, according to the U.S. Census Bureau. HUD’s fair market rent for 2 bedrooms in Mercer County is $2,242.

What is the FHA loan limit in Hamilton Square?

Hamilton Square uses the FHA limit for all of Mercer County (2026): $541,287 for a one-unit home and $1,041,125 for a four-unit home.

How much property tax do owners pay in Hamilton Square?

The typical homeowner in Hamilton Square pays $9,289 a year, according to the U.S. Census Bureau. That is 2.34% of the home’s value; in Mercer County, the rate is 2.36%.

Where can I find free help to buy or rent in Hamilton Square?

There are 2 HUD-approved counseling agencies with an office in Mercer County. 1 says it serves in Spanish. They can help you get ready to buy, with your credit, or with rent.

Sources: American Community Survey (ACS) 5-year estimates (Average 2020–2024); FHA mortgage limits (HUD) (2026 data); Conforming loan limits (FHFA) (2026 data); Fair Market Rents (HUD) (Fiscal year 2027); Small Area Fair Market Rents (HUD) (Fiscal year 2027); Census Bureau ZCTA-to-place relationship file (2020 data); HUD-approved housing counseling agencies (Retrieved November 6, 2026); Public Housing Agencies (HUD) (Retrieved November 6, 2026); Freddie Mac Primary Mortgage Market Survey (PMMS) (As of November 5, 2026); FHFA House Price Index (HPI) (2025 data); Homes with flood insurance (NFIP, FEMA) (As of August 3, 2026).