Williamstown, NJ
Population 14,855 · New Jersey
About Williamstown, NJ
Williamstown is a mid-sized city in New Jersey with a population of 14,855 residents. The median household income is $87,021 per year, which is above the national average. The median age in Williamstown is 40.6 years.
Housing in Williamstown has a median home value of $255,000 and median monthly rent of $1,262. Of the 6,082 total housing units, the majority are owner-occupied, with 4,659 owner-occupied and 1,195 renter-occupied units.
The unemployment rate in Williamstown is 5.6% and the poverty rate is 7.3%. 27.5% of residents hold a bachelor's degree or higher. The average commute time is 35 minutes.
Cost of Living in Williamstown, NJ
Compared to national averages, Williamstown has a median household income of $87,021 (16% above the national median of $75,149). Home values average $255,000, which is 4% above the national median. Monthly rent at $1,262 is 9% above the US average of $1,163. Within New Jersey, Williamstown's income is 25% below the state average of $115,667, and home values are 46% below the state median of $469,644.
Why Live in Williamstown, NJ?
Williamstown offers a strong local economy with a median household income of $87,021, well above the national average, and a low poverty rate of 7.3%, better than the national average.
Williamstown has a population of 14,855 with a median age of 40.6 years. Compare Williamstown with other cities to see how it stacks up, or explore all cities in New Jersey.
Similar Cities Near Williamstown
Cities in New Jersey with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Cherry Hill Mall | 14,827 | $117,535 | $313,000 | Compare |
| Hammonton | 14,746 | $83,044 | $324,200 | Compare |
| Highland Park | 14,981 | $101,991 | $463,600 | Compare |
| Metuchen | 14,982 | $157,779 | $565,400 | Compare |
| Ramsey | 14,722 | $164,767 | $665,700 | Compare |
| Edgewater | 14,544 | $137,847 | $723,400 | Compare |
| Moorestown-Lenola | 14,523 | $134,167 | $533,400 | Compare |
| Middlesex | 14,518 | $107,063 | $414,600 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in New Jersey
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Williamstown
What is the population of Williamstown, NJ?
The population of Williamstown, NJ is 14,855 according to the latest Census data.
What is the median household income in Williamstown?
The median household income in Williamstown, NJ is $87,021 per year.
What is the median home value in Williamstown?
The median home value in Williamstown, NJ is $255,000.
What is the average rent in Williamstown?
The median monthly rent in Williamstown, NJ is $1,262.
What is the unemployment rate in Williamstown?
The unemployment rate in Williamstown, NJ is 5.6%.