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/21250

21250

ZIP 21250 is in Baltimore, Maryland, in Baltimore County; area codes 410, 443 and 667; Eastern time. Baltimore has 42 ZIP codes in all.

Type
Standard
Time zone
America/New_York
County
Baltimore
Population
2,834
Coordinates
39.2556, -76.7112
☼ Live from 21250 — Baltimore, MD

Weather right now

Asking the National Weather Service…

NEXRAD radar
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Local time: —

Where 21250 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 21250
  • 🔢 Type 21250 into a pocket calculator and turn it upside down: OSZIZ — not quite a word, sorry.
  • ➕ As a number, 21,250 = 2 × 5 × 5 × 5 × 5 × 17. Its digits add up to 10, a total 513 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101001100000010
  • 🏠 Its numerical neighbours: 21244 (Windsor Mill, MD, 7 mi away) and 21251 (Baltimore, MD, 10 mi away).
  • 🔄 Backwards, 21250 becomes 05212, which is not a ZIP code at all.
  • 👥 35 other ZIP codes are made of exactly the same digits (01225, 01252, 01522, 02125, 02152, 02215, …). The farthest-flung twin is 51022 in Granville, IA, 1,026 miles away.
  • 🧭 Farther north than 51% of all ZIP codes, and farther east than 83%.
  • 🎯1,163 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21250 and you would come out at 39.26°S, 103.29°E — 867 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 0.245 square miles of land, 21250 is bigger than 3% of ZIP codes — about 119 football fields.
🌙 The sky over 21250 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,834This ZIP2,834
Households0
Housing units0
Median age19.9This ZIP19.9Maryland39.4US 38.9
Bachelor's degree or higher17.1%This ZIP17.1%
Mean commute16.8 minThis ZIP16.8 min
Population density11,567.3 / sq miThis ZIP11,567.3 / sq mi

Business and tax activity

Business establishments21This ZIP21
Employees318This ZIP318
Annual payroll$5,225,000This ZIP$5,225,000

Land area

Land area0.25 sq miThis ZIP0.25 sq mi
Water area0.00 sq mi

Other place names in 21250

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

ZIP codes near 21250

ZIPCityDistance
21227 Halethorpe, MD 2.0 mi
21229 Baltimore, MD 2.2 mi
21228 Catonsville, MD 2.3 mi
21223 Baltimore, MD 3.6 mi
21090 Linthicum Heights, MD 4.0 mi
21075 Elkridge, MD 4.2 mi
21216 Baltimore, MD 4.3 mi
21230 Baltimore, MD 4.6 mi
21207 Gwynn Oak, MD 4.8 mi
21043 Ellicott City, MD 4.8 mi

Find every ZIP code within 10 miles of 21250 →

Questions about this ZIP code

Where is ZIP code 21250?

21250 is in Baltimore, Maryland, in Baltimore County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 39.2556, -76.7112.

What county is 21250 in?

21250 lies in Baltimore County.

What area code is 21250?

Baltimore uses area codes 410, 443 and 667, from NANPA's telephone records.

What time zone is 21250 in?

21250 uses America/New_York.

How many people live in 21250?

About 2,834 people live in ZIP code 21250, at 11,567.3 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 21250?

The closest are 21227 (2 mi), 21229 (2.2 mi), 21228 (2.3 mi), 21223 (3.6 mi) and 21090 (4 mi).

Is 21250 a PO Box ZIP code?

21250 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21250 ZIP Code — Baltimore, Maryland (Baltimore County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21250

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