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zipcodes.pro — ZIP/21530

21530

ZIP 21530 is Flintstone, Maryland, in Allegany County; area codes 240, 227 and 301; Eastern time.

Type
Standard
Time zone
America/New_York
County
Allegany
Metro area
Cumberland, MD-WV
Population
1,404
Coordinates
39.6796, -78.5461
☼ Live from 21530 — Flintstone, MD

Weather right now

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Local time: —

Where 21530 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 21530
  • 🔢 Type 21530 into a pocket calculator and turn it upside down: OESIZ — not quite a word, sorry.
  • ➕ As a number, 21,530 = 2 × 5 × 2153. Its digits add up to 11, a total 714 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010000011010
  • 🏠 Its numerical neighbours: 21529 (Ellerslie, MD, 12 mi away) and 21531 (Friendsville, MD, 47 mi away).
  • 🔄 Backwards, 21530 becomes 03512, which is not a ZIP code at all.
  • 👥 73 other ZIP codes are made of exactly the same digits (01235, 01253, 01523, 01532, 02135, 02153, …). The farthest-flung twin is 51023 in Hawarden, IA, 955 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther east than 78%.
  • 🎯1,062 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21530 and you would come out at 39.68°S, 101.45°E — 966 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 21m.
  • 📏 At 60.9 square miles of land, 21530 is bigger than 65% of ZIP codes — room for about 46 Central Parks.
🌙 The sky over 21530 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,404This ZIP1,404
Households648This ZIP648
Housing units940This ZIP940
Median age56.0This ZIP56.0Maryland39.4US 38.9
Median household income$63,542This ZIP$63,542Maryland$103,678US $80,734
Median home value$202,400This ZIP$202,400Maryland$419,900US $332,700
Median gross rent$828This ZIP$828Maryland$1,705US $1,413
Bachelor's degree or higher21.2%This ZIP21.2%
Mean commute26.5 minThis ZIP26.5 min
Population density23.1 / sq miThis ZIP23.1 / sq mi

Business and tax activity

Business establishments19This ZIP19
Employees541This ZIP541
Annual payroll$20,563,000This ZIP$20,563,000
Tax returns filed680This ZIP680
Total adjusted gross income$45,997,000This ZIP$45,997,000

Land area

Land area60.89 sq miThis ZIP60.89 sq mi
Water area0.48 sq miThis ZIP0.48 sq mi

Other place names in 21530

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

ZIP codes near 21530

ZIPCityDistance
21555 Oldtown, MD 7.3 mi
21766 Little Orleans, MD 8.4 mi
17211 Artemas, PA 8.7 mi
21504 Cumberland, MD 10.3 mi
21502 Cumberland, MD 11.5 mi
21560 Spring Gap, MD 11.6 mi
21501 Cumberland, MD 11.7 mi
21503 Cumberland, MD 11.7 mi
15535 Clearville, PA 11.8 mi
26767 Wiley Ford, WV 12.0 mi

Find every ZIP code within 10 miles of 21530 →

Questions about this ZIP code

Where is ZIP code 21530?

21530 is in Flintstone, Maryland, in Allegany County, part of the Cumberland, MD-WV micropolitan area. Its published point location is 39.6796, -78.5461.

What county is 21530 in?

21530 lies in Allegany County.

What area code is 21530?

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

What time zone is 21530 in?

21530 uses America/New_York.

How many people live in 21530?

About 1,404 people live in ZIP code 21530, in 648 households, at 23.1 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 21530?

$63,542 a year, against $103,678 across Maryland.

What ZIP codes are near 21530?

The closest are 21555 (7.3 mi), 21766 (8.4 mi), 17211 (8.7 mi), 21504 (10.3 mi) and 21502 (11.5 mi).

Is 21530 a PO Box ZIP code?

21530 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21530 ZIP Code — Flintstone, Maryland (Allegany County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21530

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