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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 — ZIP/02155

02155

ZIP 02155 is in Medford, Massachusetts, in Middlesex County; area codes 781 and 339; Eastern time. Medford has 2 ZIP codes; the other is 02153.

Type
Standard
Time zone
America/New_York
County
Middlesex
Population
61,730
Coordinates
42.4238, -71.1077
☼ Live from 02155 — Medford, MA

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Local time: —

Where 02155 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 02155
  • 🔢 Type 02155 into a pocket calculator and turn it upside down: SSIZO — not quite a word, sorry.
  • ➕ As a number, 2,155 = 5 × 431. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100001101011
  • 🏠 Its numerical neighbours: 02153 (Medford, MA, 0 mi away) and 02156 (West Medford, MA, 1 mi away).
  • 🔄 Backwards, 02155 becomes 55120 — and that is a real ZIP code: Saint Paul, MN, 1,111 miles away.
  • 👥 36 other ZIP codes are made of exactly the same digits (01255, 01525, 05152, 05251, 10552, 12055, …). The farthest-flung twin is 51052 in Salix, IA, 1,280 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther east than 96%.
  • 🎯1,435 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 02155 and you would come out at 42.42°S, 108.89°E — 818 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 04m.
  • 📏 At 8.2 square miles of land, 02155 is bigger than 25% of ZIP codes — room for about 6.2 Central Parks.
🌙 The sky over 02155 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population61,730This ZIP61,730
Households24,370This ZIP24,370
Housing units25,618This ZIP25,618
Median age34.9This ZIP34.9Massachusetts40.0US 38.9
Median household income$129,700This ZIP$129,700Massachusetts$103,960US $80,734
Median home value$755,500This ZIP$755,500Massachusetts$562,100US $332,700
Median gross rent$2,513This ZIP$2,513Massachusetts$1,762US $1,413
Bachelor's degree or higher59.9%This ZIP59.9%
Mean commute30.0 minThis ZIP30.0 min
Population density7,538.2 / sq miThis ZIP7,538.2 / sq mi

Business and tax activity

Business establishments1,171This ZIP1,171
Employees22,673This ZIP22,673
Annual payroll$1,753,753,000This ZIP$1,753,753,000
Tax returns filed31,350This ZIP31,350
Total adjusted gross income$3,256,164,000This ZIP$3,256,164,000

Land area

Land area8.19 sq miThis ZIP8.19 sq mi
Water area0.56 sq miThis ZIP0.56 sq mi

Other place names in 02155

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 02155

ZIPCityDistance
02153 Medford, MA 0.4 mi
02156 West Medford, MA 1.3 mi
02144 Somerville, MA 1.8 mi
02145 Somerville, MA 2.4 mi
02474 Arlington, MA 2.5 mi
02148 Malden, MA 2.5 mi
02140 Cambridge, MA 2.6 mi
01890 Winchester, MA 2.7 mi
02149 Everett, MA 3.0 mi
02143 Somerville, MA 3.0 mi

Find every ZIP code within 10 miles of 02155 →

Questions about this ZIP code

Where is ZIP code 02155?

02155 is in Medford, Massachusetts, in Middlesex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.4238, -71.1077.

What county is 02155 in?

02155 lies in Middlesex County.

What area code is 02155?

Medford uses area codes 781 and 339, from NANPA's telephone records.

What time zone is 02155 in?

02155 uses America/New_York.

How many people live in 02155?

About 61,730 people live in ZIP code 02155, in 24,370 households, at 7,538.2 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 02155?

$129,700 a year, against $103,960 across Massachusetts.

What ZIP codes are near 02155?

The closest are 02153 (0.4 mi), 02156 (1.3 mi), 02144 (1.8 mi), 02145 (2.4 mi) and 02474 (2.5 mi).

Is 02155 a PO Box ZIP code?

02155 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “02155 ZIP Code — Medford, Massachusetts (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02155

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