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/DORCHESTER

Dorchester ZIP codes, Massachusetts

Dorchester, MA has 3 ZIP codes (02125, 02121 and 02122) and area codes 617 and 857. The largest is 02125.

USPS city name
3 ZIP codes
Population
86,181
Area codes
617, 857

Dorchester in numbers

About 86,181 people live in Dorchester, in 34,305 households. The median household income is $71,331 a year, 31% below the Massachusetts median of $103,960 (US: $80,734). The median owner-occupied home is valued at $639,586 (14% above the Massachusetts median).

Population86,181Dorchester86,181
Households34,305Dorchester34,305
Median household income$71,331Dorchester$71,331Massachusetts$103,960US $80,734
Median home value$639,586Dorchester$639,586Massachusetts$562,100US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the 3 ZIP codes addressed as Dorchester, medians weighted by households. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Dorchester

ZIP codes with the USPS city name Dorchester
ZIP City Type Population Median income Median home
02125 Dorchester , MA Standard 33,662 $82,953 $657,100
02121 Dorchester , MA Standard 29,040 $43,136 $590,200
02122 Dorchester , MA Standard 23,479 $86,150 $669,900

Map of Dorchester ZIP codes

021250212102122

The ZIP codes of Dorchester, 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 Dorchester

The nearest larger towns are Boston (666,442 people, 3.3 mi), Quincy (102,114 people, 4.2 mi) and Cambridge (118,796 people, 5.6 mi).

Towns near Dorchester
TownPopulationDistance
Boston 666,442 3.3 mi
Brookline 63,266 4.1 mi
Quincy 102,114 4.2 mi
Milton 28,587 4.5 mi
Cambridge 118,796 5.6 mi
Somerville 81,036 6.2 mi
Chelsea 39,908 6.5 mi
Winthrop Town 18,759 6.8 mi
Everett 50,045 7.0 mi
Dedham 25,237 7.1 mi
Watertown 35,543 7.3 mi
Newton 89,044 7.5 mi
Braintree Town 38,899 7.6 mi
Medford 59,354 8.5 mi

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

Cite this page

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

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