In 2023, Williamstown, NJ had a population of 14.9k people with a median age of 40.6 and a median household income of $87,021. Between 2022 and 2023 the population of Williamstown, NJ grew from 14,770 to 14,855, a 0.575% increase and its median household income declined from $89,567 to $87,021, a −2.84% decrease.
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None of the households in Williamstown, NJ reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
In 2023, the median property value in Williamstown, NJ was $255,000, and the homeownership rate was 79.6%.
Most people in Williamstown, NJ drove alone to work, and the average commute time was 35 minutes. The average car ownership in Williamstown, NJ was 2 cars per household.