Williamstown ZIP Codes

List of Zip Codes of Williamstown

The following table lists ZIP Codes associated with Williamstown, Massachusetts, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

About Williamstown Massachusetts Zip Codes

The city of Williamstown in Massachusetts (MA) is served by approximately 1 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 7,985 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with Williamstown fall within county jurisdictions such as Berkshire. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for Williamstown, Massachusetts follow the America/New_York time zone.