Market Overview
Home Prices in Williamstown, NJ
The median home value in Williamstown, NJ is $378,055 as of mid-2026, according to Zillow's Home Value Index (ZHVI).That's up 2% compared to a year ago and up 4.5% from two years prior.
Compared to the U.S. national median of $410,000, homes in Williamstown are priced8% below average. Williamstown is part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area.
Over the past five years, Williamstown home values have risen by approximately41.0%, reflecting strong long-term appreciation in this market.
Price History
Williamstown Home Price Trend
City Comparison
Williamstown vs. National Median
At $378,055, homes in Williamstown cost 8% below the national median of $410,000. This makes Williamstown a relatively affordable market for buyers seeking value.
Affordability
What Does It Cost to Buy in Williamstown?
20% Down Payment
$75,611
on $378,055
Monthly P&I
$1,972/mo
30-yr @ 6.8%
Total Monthly Est.
~$2,504/mo
incl. taxes & insurance
Income Needed
$100,160
gross annual (30% rule)
10% Down Option
$37,806
+ PMI applies
Loan Amount (20% dn)
$302,444
at current rates
Estimates assume a 30-year fixed mortgage at 6.8%. Monthly total includes estimated property taxes and homeowner's insurance. Actual costs vary.
FAQ
Frequently Asked Questions
What is the average home price in Williamstown, NJ?
The median home value in Williamstown is $378,055 as of mid-2026, according to Zillow's Home Value Index (ZHVI). That's up 2% year-over-year.
How much have home prices changed in Williamstown?
Over the past year, home values in Williamstown have increased by 2%. Over five years, prices have risen approximately 41.0%.
How much do I need to earn to buy a home in Williamstown?
To comfortably afford the median home price of $378,055 with a 20% down payment ($75,611) at today's rates (6.8%), you'd need a gross annual income of approximately $100,160. This assumes keeping total housing costs at or below 30% of gross income.
How does Williamstown compare to the national average home price?
The national median home value is approximately $410,000. At $378,055, homes in Williamstown are 8% below the national average.
What metro area is Williamstown part of?
Williamstown is part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area. Home prices and market conditions can vary across the broader metro region.