| Median Foreclosure: | $208,942 |
| Median For Sale: | $177,900 |
| Median Land: | $120,000 |
| Median Auction: | $39,900 |
| Median Rental: | $1,325 |
| Median New Home: | $260,990 |
| Population | 11,812 |
| Square Miles | 6.16 |
| Population Density | 1,916.60 |
| Median Age | 36 |
| Median Household Income | $44,200 |
| Per Capita Income | $19,112 |
| Median Rent | $520 |
| Percent Renters | 21% |
| Median Williamstown, NJ Rental Price: | $1,325 |
| Studio Rental Median Price: | $2,500 |
| 1 Bedroom Rental Median Price: | $750 |
| 2 Bedroom Rental Median Price: | $920 |
| 3 Bedroom Rental Median Price: | $1,475 |
| 4 Bedroom Rental Median Price: | $2,600 |
| Median Williamstown, NJ For Sale Price: | $177,900 |
| Studio For Sale Median Price: | $169,000 |
| 1 Bedroom For Sale Median Price: | $109,000 |
| 2 Bedroom For Sale Median Price: | $85,000 |
| 3 Bedroom For Sale Median Price: | $161,000 |
| 4 Bedroom For Sale Median Price: | $225,000 |
| Median Williamstown, NJ New Home Price: | $260,990 |
| 2 Bedroom New Home Median Price: | $169,900 |
| 3 Bedroom New Home Median Price: | $249,990 |
| 4 Bedroom New Home Median Price: | $269,990 |
| Median Williamstown, NJ Foreclosure Price: | $208,942 |
| 3 Bedroom Foreclosure Median Price: | $143,800 |
| 4 Bedroom Foreclosure Median Price: | $249,850 |