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 — ZIP/02558

02558

ZIP 02558 is Onset, Massachusetts, in Plymouth County; area codes 508 and 774; Eastern time.

Type
Standard
Time zone
America/New_York
County
Plymouth
Population
1,734
Coordinates
41.7463, -70.6517
☼ Live from 02558 — Onset, MA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 02558 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 02558
  • 🔢 Type 02558 into a pocket calculator and turn it upside down: BSSZO — not quite a word, sorry.
  • ➕ As a number, 2,558 = 2 × 1279. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100111111110
  • 🏠 Its numerical neighbours: 02557 (Oak Bluffs, MA, 21 mi away) and 02559 (Pocasset, MA, 4 mi away).
  • 🔄 Backwards, 02558 becomes 85520, which is not a ZIP code at all.
  • 👥 25 other ZIP codes are made of exactly the same digits (05825, 08525, 20585, 20855, 25085, 25508, …). The farthest-flung twin is 85025 in Phoenix, AZ, 2,315 miles away.
  • 🧭 Farther north than 73% of all ZIP codes, and farther east than 97%.
  • 🎯1,461 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 02558 and you would come out at 41.75°S, 109.35°E — 766 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 13m of daylight. Shortest: 9h 08m.
  • 📏 At 1.1 square miles of land, 02558 is bigger than 8% of ZIP codes — about 541 football fields.
🌙 The sky over 02558 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,734This ZIP1,734
Households891This ZIP891
Housing units1,602This ZIP1,602
Median age56.5This ZIP56.5Massachusetts40.0US 38.9
Median household income$79,598This ZIP$79,598Massachusetts$103,960US $80,734
Median home value$441,700This ZIP$441,700Massachusetts$562,100US $332,700
Median gross rent$1,468This ZIP$1,468Massachusetts$1,762US $1,413
Bachelor's degree or higher20.0%This ZIP20.0%
Mean commute16.6 minThis ZIP16.6 min
Population density1,552.4 / sq miThis ZIP1,552.4 / sq mi

Business and tax activity

Business establishments38This ZIP38
Employees193This ZIP193
Annual payroll$7,748,000This ZIP$7,748,000

Land area

Land area1.12 sq miThis ZIP1.12 sq mi
Water area1.06 sq miThis ZIP1.06 sq mi

Other place names in 02558

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

ZIP codes near 02558

ZIPCityDistance
02538 East Wareham, MA 2.2 mi
02571 Wareham, MA 2.5 mi
02553 Monument Beach, MA 2.7 mi
02532 Buzzards Bay, MA 2.9 mi
02559 Pocasset, MA 4.3 mi
02534 Cataumet, MA 5.7 mi
02738 Marion, MA 5.8 mi
02576 West Wareham, MA 6.0 mi
02542 Buzzards Bay, MA 6.1 mi
02561 Sagamore, MA 6.3 mi

Find every ZIP code within 10 miles of 02558 →

Questions about this ZIP code

Where is ZIP code 02558?

02558 is in Onset, Massachusetts, in Plymouth County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 41.7463, -70.6517.

What county is 02558 in?

02558 lies in Plymouth County.

What area code is 02558?

Onset uses area codes 508 and 774, from NANPA's telephone records.

What time zone is 02558 in?

02558 uses America/New_York.

How many people live in 02558?

About 1,734 people live in ZIP code 02558, in 891 households, at 1,552.4 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 02558?

$79,598 a year, against $103,960 across Massachusetts.

What ZIP codes are near 02558?

The closest are 02538 (2.2 mi), 02571 (2.5 mi), 02553 (2.7 mi), 02532 (2.9 mi) and 02559 (4.3 mi).

Is 02558 a PO Box ZIP code?

02558 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “02558 ZIP Code — Onset, Massachusetts (Plymouth County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/02558

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/02558.json

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