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zipcodes.pro — ZIP/21531

21531

ZIP 21531 is Friendsville, Maryland, in Garrett County; area codes 240, 301 and 227; Eastern time.

Type
Standard
Time zone
America/New_York
County
Garrett
Metro area
none
Population
2,487
Coordinates
39.6430, -79.4281
☼ Live from 21531 — Friendsville, MD

Weather right now

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Local time: —

Where 21531 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 21531
  • 🔢 Type 21531 into a pocket calculator and turn it upside down: IESIZ — not quite a word, sorry.
  • ➕ As a number, 21,531 = 3 × 7177. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010000011011
  • 🏠 Its numerical neighbours: 21530 (Flintstone, MD, 47 mi away) and 21532 (Frostburg, MD, 24 mi away).
  • 🔄 Backwards, 21531 becomes 13512, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (11235, 11352, 12153, 12513, 12531, 13152, …). The farthest-flung twin is 51231 in Archer, IA, 877 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther east than 76%.
  • 🎯1,016 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21531 and you would come out at 39.64°S, 100.57°E — 1,006 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 22m.
  • 📏 At 61.2 square miles of land, 21531 is bigger than 65% of ZIP codes — room for about 46 Central Parks.
🌙 The sky over 21531 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,487This ZIP2,487
Households1,101This ZIP1,101
Housing units1,351This ZIP1,351
Median age48.8This ZIP48.8Maryland39.4US 38.9
Median household income$63,750This ZIP$63,750Maryland$103,678US $80,734
Median home value$180,300This ZIP$180,300Maryland$419,900US $332,700
Median gross rent$575This ZIP$575Maryland$1,705US $1,413
Bachelor's degree or higher16.8%This ZIP16.8%
Mean commute32.9 minThis ZIP32.9 min
Population density40.7 / sq miThis ZIP40.7 / sq mi

Business and tax activity

Business establishments47This ZIP47
Employees259This ZIP259
Annual payroll$7,669,000This ZIP$7,669,000
Tax returns filed1,020This ZIP1,020
Total adjusted gross income$64,251,000This ZIP$64,251,000

Land area

Land area61.16 sq miThis ZIP61.16 sq mi
Water area0.95 sq miThis ZIP0.95 sq mi

Other place names in 21531

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

ZIP codes near 21531

ZIPCityDistance
21520 Accident, MD 6.4 mi
21541 Mc Henry, MD 7.5 mi
15411 Addison, PA 8.5 mi
15459 Markleysburg, PA 8.7 mi
26525 Bruceton Mills, WV 10.5 mi
21522 Bittinger, MD 11.3 mi
26519 Albright, WV 11.8 mi
15485 Ursina, PA 13.1 mi
15440 Gibbon Glade, PA 13.2 mi
15424 Confluence, PA 13.3 mi

Find every ZIP code within 10 miles of 21531 →

Questions about this ZIP code

Where is ZIP code 21531?

21531 is in Friendsville, Maryland, in Garrett County. Its published point location is 39.6430, -79.4281.

What county is 21531 in?

21531 lies in Garrett County.

What area code is 21531?

Friendsville uses area codes 240, 301 and 227, from NANPA's telephone records.

What time zone is 21531 in?

21531 uses America/New_York.

How many people live in 21531?

About 2,487 people live in ZIP code 21531, in 1,101 households, at 40.7 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 21531?

$63,750 a year, against $103,678 across Maryland.

What ZIP codes are near 21531?

The closest are 21520 (6.4 mi), 21541 (7.5 mi), 15411 (8.5 mi), 15459 (8.7 mi) and 26525 (10.5 mi).

Is 21531 a PO Box ZIP code?

21531 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21531 ZIP Code — Friendsville, Maryland (Garrett County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21531

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