Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MA/FITCHBURG

Fitchburg ZIP code, Massachusetts

The ZIP code for Fitchburg, MA is 01420, and its area codes are 978 and 351.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
41,798
Area codes
978, 351

Mail addressed to Fitchburg uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Fitchburg in numbers

About 41,798 people live in Fitchburg, in 16,659 households, the 35th-largest of Massachusetts's 248 census places. The median household income is $73,040 a year, 30% below the Massachusetts median of $103,960 (US: $80,734). The median owner-occupied home is valued at $336,400 (40% below the Massachusetts median), and median gross rent is $1,222 a month. The median age is 36.3; 25.1% of adults 25 and over hold a bachelor's degree or higher (47.3% across Massachusetts); the average commute takes 27 minutes.

Population41,798Fitchburg41,798
Households16,659Fitchburg16,659
Median age36.3Fitchburg36.3Massachusetts40.0US 38.9
Median household income$73,040Fitchburg$73,040Massachusetts$103,960US $80,734
Median home value$336,400Fitchburg$336,400Massachusetts$562,100US $332,700
Median gross rent$1,222Fitchburg$1,222Massachusetts$1,762US $1,413
Bachelor's degree or higher25.1%Fitchburg25.1%Massachusetts47.3%US 35.7%
Mean commute27.1 minFitchburg27.1 minMassachusetts29.1 minUS 26.4 min
Population density1,502 / sq miFitchburg1,502 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Fitchburg city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Fitchburg

ZIP codes with the USPS city name Fitchburg
ZIP City Type Population Median income Median home
01420 Fitchburg , MA Standard 41,839 $72,780 $335,300

Other ZIP codes overlapping Fitchburg

These ZIP codes cover part of Fitchburg but are addressed as somewhere else.

ZIP codes overlapping Fitchburg
ZIP City Type Population Median income Median home
01462 Lunenburg , MA Standard 11,919 $112,992 $463,800

Map of Fitchburg ZIP codes

01420

The ZIP codes of Fitchburg, MA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Fitchburg

The nearest larger towns are Leominster (43,909 people, 6.1 mi), Nashua, NH (91,294 people, 19 mi) and Worcester (207,055 people, 23 mi).

Towns near Fitchburg
TownPopulationDistance
Leominster 43,909 6.1 mi
Gardner 21,148 8.9 mi
Ayer 3,098 12.1 mi
Winchendon 4,331 12.7 mi
Baldwinville 2,528 13.4 mi
Clinton 7,658 14.3 mi
Milford, NH 8,956 17.3 mi
Jaffrey, NH 3,277 17.9 mi
Littleton Common 3,289 18.1 mi
Hudson 15,719 19.3 mi
Nashua, NH 91,294 19.4 mi
Peterborough, NH 2,539 20.4 mi
Athol 8,801 21.1 mi
Northborough 6,392 21.8 mi

More nearby: every ZIP code in Worcester County · Massachusetts ZIP codes

Cite this page

zipcodes.pro. “Fitchburg, MA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ma/fitchburg

Underlying data is public domain or openly licensed — sources, vintages and licences.