Apartments for Rent in Williamstown, NJ

Prices and availability in Williamstown, NJ were last updated on 13 Jul 2026.

The best apartments in Williamstown, NJ are: Merion at Cross Keys, The Willows at Justin Commons and Hi View Apartments.

The average rent in Williamstown, NJ is $1,750.

The price range for a 1-bedroom apartment in Williamstown, NJ is between $1,015 and $4,631.

The price range for a 2-bedroom apartment in Williamstown, NJ is between $682 and $5,426.

The price range for a 3-bedroom apartment in Williamstown, NJ is between $1,452 and $1,720.

In Williamstown, 18% of the residents are renting compared to 82% owning a home, according to data from the U.S. Census Bureau. Large-scale apartment buildings with more than 50 units represent 21% of Williamstown's rentals, 70% are small-scale complexes with under 50 units, and 9% are single-family rentals.

The average age of rental buildings in Williamstown is 38 years old, with 39% being newer apartment buildings completed since 2000. The average height of apartment buildings in the city is 2 stories, of which all are garden-style apartment communities, none are mid-sized buildings, and none are high-rises. These characteristics describe large-scale apartment communities of 50 apartments or more.

Rental apartments in Williamstown come in a range of sizes and floorplans. Studio apartments represent 2% of units for rent, ideal for singles, renters on a budget and people who value central locations more than space. Rentals with 1-bedroom floorplans make up 38% of the total apartments in the city, while 2-bedroom floorplans represent around 57% of all rentals in Williamstown. The rest are larger floorplans with 3 bedrooms or more, typically preferred by families, larger households or roommates sharing space.