Find the last 4 digits (ZIP+4) for an address in 01720

ZIP 01720, Acton, MA is filled in. Just type the street address.

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ZIP Code 01720 – Acton, MA

Acton, Massachusetts · Middlesex County · Eastern time

ZIP code01720
CityActon
StateMassachusetts
CountyMiddlesex County
Population23,526
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area19.62 sq mi
Center (lat, long)42.4840, -71.4385

Area codes in this area

781339

These are the area codes that most often serve ZIP 01720 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

01718 Acton · 2.7 mi01703 Framingham · 2.8 mi01704 Framingham · 2.8 mi01705 Framingham · 2.8 mi02456 New Town · 2.8 mi01742 Concord · 4 mi01754 Maynard · 4.1 mi01719 Boxborough · 4.2 mi

About ZIP 01720

ZIP code 01720 is assigned to Acton, Massachusetts. It lies in Middlesex County. Its Census area covers about 19.62 square miles of land. The closest neighboring ZIP is 01718 (Acton), about 2.7 miles away.

Every address in 01720 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources