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/01825

01825

ZIP 01825 is in North Reading, Massachusetts, in Middlesex County; area code 978; Eastern time. North Reading has 3 ZIP codes; the others are 01864 and 01889.

Type
No street area
Time zone
America/New_York
County
Middlesex
Coordinates
42.5751, -71.0787

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 01864, whose figures describe that area — not this ZIP code.

☼ Live from 01825 — North Reading, MA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 01825 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 01825
  • 🔢 Type 01825 into a pocket calculator and turn it upside down: SZBIO — not quite a word, sorry.
  • ➕ As a number, 1,825 = 5 × 5 × 73. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 11100100001
  • 🏠 Its numerical neighbours: 01824 (Chelmsford, MA, 14 mi away) and 01826 (Dracut, MA, 13 mi away).
  • 🔄 Backwards, 01825 becomes 52810, which is not a ZIP code at all.
  • 👥 65 other ZIP codes are made of exactly the same digits (01258, 01852, 02185, 02815, 05821, 08215, …). The farthest-flung twin is 85012 in Phoenix, AZ, 2,293 miles away.
  • 🧭 Farther north than 80% of all ZIP codes, and farther east than 96%.
  • 🎯1,436 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 01825 and you would come out at 42.58°S, 108.92°E — 827 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 19m of daylight. Shortest: 9h 03m.
🌙 The sky over 01825 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

Land area

ZIP codes near 01825

ZIPCityDistance
01864 North Reading, MA 0.4 mi
01889 North Reading, MA 1.6 mi
01867 Reading, MA 3.1 mi
01940 Lynnfield, MA 3.5 mi
01949 Middleton, MA 4.4 mi
01887 Wilmington, MA 4.4 mi
01937 Hathorne, MA 4.9 mi
01880 Wakefield, MA 4.9 mi
01960 Peabody, MA 6.2 mi
01899 Andover, MA 6.5 mi

Find every ZIP code within 10 miles of 01825 →

Questions about this ZIP code

Where is ZIP code 01825?

01825 is in North Reading, Massachusetts, in Middlesex County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.5751, -71.0787.

What county is 01825 in?

01825 lies in Middlesex County.

What area code is 01825?

North Reading uses area code 978, from NANPA's telephone records.

What time zone is 01825 in?

01825 uses America/New_York.

What ZIP codes are near 01825?

The closest are 01864 (0.4 mi), 01889 (1.6 mi), 01867 (3.1 mi), 01940 (3.5 mi) and 01949 (4.4 mi).

Is 01825 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

Download or cite

Cite this page

zipcodes.pro. “01825 ZIP Code — North Reading, Massachusetts (Middlesex County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/01825

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/01825.json

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