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Fitchburg, MA ZIP Code

Fitchburg, Massachusetts has one ZIP code: .

Mail addressed to Fitchburg covers nearby places too.

Where the 01420 ZIP code reaches

ZIP code map of Fitchburg, MA1 ZIP code area in Fitchburg: 01420. Dashed line: Fitchburg city limits. Grey areas: neighboring towns.0142001420LeominsterLunenburgWestminsterAshbyPrincetonWest Townsend01420LeominsterLunenburgWestminsterAshbyPrinceton

Tap or point to an area to see its ZIP code.Full-size map

Dashed line: Fitchburg city limits.

Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).

Check an address in Fitchburg

Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?

Fitchburg ZIP code questions

What is the main ZIP code for Fitchburg?

01420, the ZIP code of the main Fitchburg post office at 881 Main St Suite E.

What county is Fitchburg in?

Worcester County.

ZIP codes for towns near Fitchburg

Leominster, MA1 ZIP code: 01453 · 6 milesNashua, NH5 ZIP codes: 03060, 03062, 03063 and more · 19 milesMarlborough, MA1 ZIP code: 01752 · 22 milesShrewsbury, MA2 ZIP codes: 01545 and more · 23 milesChelmsford, MA2 ZIP codes: 01824, 01863 · 23 milesWorcester, MA15 ZIP codes: 01602, 01603, 01604 and more · 23 miles

More towns near Fitchburg: Lowell, Dracut, Framingham, Billerica, Tewksbury, Lexington, Natick, Manchester, Waltham.

Sources and last checked

USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.

Checked October 20, 2026. Sources · How we build our lists · Corrections