ZIP codes

ZIP codes in Suffolk County, Massachusetts

Suffolk County has 37 ZIP codes. 34 lie entirely inside it and 3 are shared with neighboring counties, so part of their land and their people are elsewhere. About 785,925 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 37; 2 more just touch the border (under 1% of their land)
Entirely inside: 34; 99% or more of their land
Shared with other counties: 3; Most with Norfolk County (3)
Most populated ZIP: 02151; 60,012 people · Revere
Least populated ZIP: 02133; 62 people · Boston; 2 more with nobody living there
Largest ZIP by land: 02151; 5.7 sq mi · Revere

Map of the ZIP codes in Suffolk County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Suffolk County

37 ZIP codes in Suffolk County, MA, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
02108	Boston	3,794	100%	3,794
02109	Boston	3,612	100%	3,612
02110	Boston	2,342	100%	2,342
02111	Boston	8,407	100%	8,407
02113	Boston	6,385	100%	6,385
02114	Boston	14,418	100%	14,418
02115	Boston	29,705	100%	29,705
02116	Boston	21,978	100%	21,978
02118	Boston	28,946	100%	28,946
02119	Boston	27,377	100%	27,377
02120	Boston	15,283	100%	15,283
02121	Boston	29,040	100%	29,040
02122	Boston	23,479	100%	23,479
02124	Boston	56,216	100%	56,216
02125	Boston	33,662	100%	33,662
02126	Boston	26,583	100%	26,583
02127	Boston	36,769	100%	36,769
02128	Boston	43,345	100%	43,345
02129	Boston	20,032	100%	20,032
02130	Boston	40,055	100%	40,055
02131	Boston	31,151	100%	31,151
02132	Boston	26,444	100%	26,444
02133	Boston	62	100%	62
02134	Boston	17,667	100%	17,667
02135	Boston	43,149	100%	43,149
02136	Boston	37,265	100%	37,265
02150	Chelsea	39,908	100%	39,908
02151	Revere	60,012	100%	60,012
02152	Winthrop Town	18,759	100%	18,759
02163	Boston	1,817	100%	1,817
02199	Boston	1,292	100%	1,292
02203	Boston	0	100%	0
02205	Boston	0	100%	0
02210	Boston	6,971	100%	6,971
02215	Boston	24,581	95%	≈ 23,791
02445	Brookline	22,560	2.7%	≈ 272
02467	Brookline	23,001	12%	≈ 5,847

They also touch the county with under 1% of their land, so they aren’t counted: 02149 and 02446.

ZIP codes shared with other counties

These 3 ZIP codes have part of their land in another county. The first figure is the share of their land in Suffolk County; then, where the rest lies.

02215 (Boston): 95% here; 5.0% in Norfolk County.
02445 (Brookline): 2.7% here; 97% in Norfolk County.
02467 (Brookline): 12% here; 59% in Norfolk County and 29% in Middlesex County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Boston (32), Brookline (2), Chelsea (1), Revere (1), and Winthrop Town (1).

They start with 3 different three-digit prefixes, one per USPS sorting center: 021, 022, and 024.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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