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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Berkshire County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Berkshire County.

County State ZIP Code City Area Codes
Berkshire County MA 01029 East Otis 413
Berkshire County MA 01201 Pittsfield 413, 518, 838
Berkshire County MA 01202 Pittsfield 413
Berkshire County MA 01203 Pittsfield 413
Berkshire County MA 01220 Adams 413
Berkshire County MA 01222 Ashley Falls 413, 860, 959
Berkshire County MA 01223 Becket 413
Berkshire County MA 01224 Berkshire 413
Berkshire County MA 01225 Cheshire 413
Berkshire County MA 01226 Dalton 413
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.