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zipcodes.pro — ZIP/21779

21779

ZIP 21779 is Rohrersville, Maryland, in Washington County; area codes 240, 301 and 227; Eastern time.

Type
Standard
Time zone
America/New_York
County
Washington
Population
1,311
Coordinates
39.4245, -77.6540
☼ Live from 21779 — Rohrersville, MD

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Local time: —

Where 21779 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 21779
  • 🔢 Type 21779 into a pocket calculator and turn it upside down: GLLIZ — not quite a word, sorry.
  • ➕ As a number, 21,779 = 29 × 751. Its digits add up to 26, a total 2,038 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010100010011
  • 🏠 Its numerical neighbours: 21778 (Rocky Ridge, MD, 22 mi away) and 21780 (Sabillasville, MD, 20 mi away).
  • 🔄 Backwards, 21779 becomes 97712 — and that is a real ZIP code: Brothers, OR, 2,204 miles away.
  • 👥 24 other ZIP codes are made of exactly the same digits (12779, 12977, 17729, 17972, 21797, 27917, …). The farthest-flung twin is 97127 in Lafayette, OR, 2,325 miles away.
  • 🧭 Farther north than 52% of all ZIP codes, and farther east than 79%.
  • 🎯1,111 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21779 and you would come out at 39.42°S, 102.35°E — 916 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
  • 📏 At 9.7 square miles of land, 21779 is bigger than 27% of ZIP codes — room for about 7.4 Central Parks.
🌙 The sky over 21779 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,311This ZIP1,311
Households462This ZIP462
Housing units486This ZIP486
Median age41.8This ZIP41.8Maryland39.4US 38.9
Median home value$608,800This ZIP$608,800Maryland$419,900US $332,700
Median gross rent$1,133This ZIP$1,133Maryland$1,705US $1,413
Bachelor's degree or higher37.3%This ZIP37.3%
Mean commute45.7 minThis ZIP45.7 min
Population density134.7 / sq miThis ZIP134.7 / sq mi

Business and tax activity

Business establishments9This ZIP9
Employees58This ZIP58
Annual payroll$1,354,000This ZIP$1,354,000
Tax returns filed490This ZIP490
Total adjusted gross income$52,170,000This ZIP$52,170,000

Land area

Land area9.73 sq miThis ZIP9.73 sq mi
Water area0.00 sq mi

Other place names in 21779

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

ZIP codes near 21779

ZIPCityDistance
21718 Burkittsville, MD 2.6 mi
21715 Brownsville, MD 3.2 mi
21756 Keedysville, MD 3.2 mi
21769 Middletown, MD 4.7 mi
21758 Knoxville, MD 4.9 mi
21782 Sharpsburg, MD 6.1 mi
21755 Jefferson, MD 6.4 mi
21713 Boonsboro, MD 7.0 mi
21716 Brunswick, MD 7.5 mi
21714 Braddock Heights, MD 7.7 mi

Find every ZIP code within 10 miles of 21779 →

Questions about this ZIP code

Where is ZIP code 21779?

21779 is in Rohrersville, Maryland, in Washington County, part of the Hagerstown-Martinsburg, MD-WV metropolitan area. Its published point location is 39.4245, -77.6540.

What county is 21779 in?

21779 lies in Washington County.

What area code is 21779?

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

What time zone is 21779 in?

21779 uses America/New_York.

How many people live in 21779?

About 1,311 people live in ZIP code 21779, in 462 households, at 134.7 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 21779?

The closest are 21718 (2.6 mi), 21715 (3.2 mi), 21756 (3.2 mi), 21769 (4.7 mi) and 21758 (4.9 mi).

Is 21779 a PO Box ZIP code?

21779 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21779 ZIP Code — Rohrersville, Maryland (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21779

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