Berkshire County, Massachusetts has 38 ZIP codes in this list, from 01029 to 01343. They cover 34 places, among them Pittsfield, Dalton, Stockbridge and East Otis.
The ZIP code areas of Berkshire County add up to about 909 square miles of land (2,355 sq km) as the Census Bureau draws them. The largest is 01230 (Great Barrington), with 97.0 square miles.
Places with more than one code here: Pittsfield (3 codes), Dalton (2 codes), Stockbridge (2 codes).
Using these codes
In an address, the ZIP code comes last, after the city and the two-letter state: East Otis, MA 01029.
Tap a ZIP code to open it in the look-up, with a copy button for the address line.
A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
"No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.
ZIP Codes