Find the last 4 digits (ZIP+4) for an address in 01432

ZIP 01432, Ayer, MA is filled in. Just type the street address.

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ZIP Code 01432 – Ayer, MA

Ayer, Massachusetts · Middlesex County · Eastern time

ZIP code01432
CityAyer
StateMassachusetts
CountyMiddlesex County
Population8,521
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area8.52 sq mi
Center (lat, long)42.5666, -71.5751

Area codes in this area

781339

These are the area codes that most often serve ZIP 01432 (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

01470 Groton · 3.1 mi01471 Groton · 3.1 mi01434 Devens · 3.1 mi01450 Groton · 3.2 mi01464 Shirley · 3.4 mi01472 West Groton · 3.7 mi01451 Harvard · 4.5 mi01460 Littleton · 4.8 mi

About ZIP 01432

ZIP code 01432 is assigned to Ayer, Massachusetts. It lies in Middlesex County. Its Census area covers about 8.52 square miles of land. The closest neighboring ZIP is 01470 (Groton), about 3.1 miles away.

Every address in 01432 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