Williamstown, NJ

Average · 95

New Jersey · Population 14,855 · Updated March 2026

$1,262
Median Rent / Month
$87,021
Median Income
$255,000
Median Home Value
$1,754
Owner Costs / Month

Affordability

How far your income goes in Williamstown

17.4%
Rent-to-Income Ratio
Affordable
Rent takes less than 25% of median income — considered affordable by HUD standards.

Tax Burden in New Jersey

State-level tax rates that affect your costs

10.75%
Income Tax (Top Rate)
6.625%
Sales Tax
2.23%
Property Tax Rate

Estimated Annual Costs

$15,144
Annual Rent
$9,355
State Income Tax
$5,686
Property Tax (est.)

Cost of Living Overview

Williamstown has a cost of living close to the national average, offering a balanced mix of expenses and amenities. With a cost index of 95 (where 100 equals the national median), Williamstown residents can expect to pay median rent of $1,262/month while earning a median household income of $87,021/year.

The median home value in Williamstown, NJ is $255,000, with typical monthly owner costs around $1,754 including mortgage, insurance, and taxes. The median rent-to-income ratio of 17.4% means housing is relatively affordable here — well below the 30% threshold that HUD considers cost-burdened.

New Jersey's top income tax rate of 10.75% is among the highest in the nation, adding to the overall cost burden. Combined with a 6.625% sales tax rate and 2.23% effective property tax rate, the overall tax environment is a factor in the total cost of living in Williamstown.

Frequently Asked Questions

Common questions about living costs in Williamstown

What is the cost of living in Williamstown, NJ?
The cost of living index in Williamstown, NJ is 95 (US average = 100). Median monthly rent is $1,262, median household income is $87,021/year, and the median home value is $255,000.
Is Williamstown, NJ affordable?
Yes, Williamstown is more affordable than the national average with a cost index of 95. The rent-to-income ratio is 17.4%—below the 30%% threshold considered affordable by HUD.
What is the average rent in Williamstown, NJ?
The median gross rent in Williamstown, NJ is $1,262 per month according to the US Census Bureau ACS 2023 data. Annual rent costs approximately $15,144.
What is the median household income in Williamstown?
The median household income in Williamstown, NJ is $87,021 per year. This compares to the national median of approximately $80,000.
What are the taxes like in New Jersey?
New Jersey has a top income tax rate of 10.75%, a sales tax of 6.625%, and an effective property tax rate of 2.23%.