U.S. postal lookup

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.

42,735 verified records
All states and U.S. territories
Maps and coordinates
County directory

Essex County ZIP Codes

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

County State ZIP Code City Area Codes
Essex County MA 01949 Middleton 339, 351, 781, 978
Essex County MA 01950 Newburyport 351, 978
Essex County MA 01951 Newbury 351, 978
Essex County MA 01952 Salisbury 351, 603, 978
Essex County MA 01960 Peabody 339, 351, 781, 978
Essex County MA 01961 Peabody 351
Essex County MA 01965 Prides Crossing 351, 978
Essex County MA 01966 Rockport 351, 978
Essex County MA 01969 Rowley 351, 978
Essex County MA 01970 Salem 339, 351, 781, 978
Page 5 of 16

Geographic Map of Essex County

Postal context

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.