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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/21750

21750

ZIP 21750 is Hancock, Maryland, in Washington County; area codes 240 and 301; Eastern time.

Type
Standard
Time zone
America/New_York
County
Washington
Population
3,417
Coordinates
39.6623, -78.2360
☼ Live from 21750 — Hancock, MD

Weather right now

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Local time: —

Where 21750 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 21750
  • 🔢 Type 21750 into a pocket calculator and turn it upside down: OSLIZ — not quite a word, sorry.
  • ➕ As a number, 21,750 = 2 × 3 × 5 × 5 × 5 × 29. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010011110110
  • 🏠 Its numerical neighbours: 21749 (Hagerstown, MD, 27 mi away) and 21754 (Ijamsville, MD, 54 mi away).
  • 🔄 Backwards, 21750 becomes 05712, which is not a ZIP code at all.
  • 👥 65 other ZIP codes are made of exactly the same digits (01257, 01527, 01752, 02571, 02715, 07512, …). The farthest-flung twin is 75102 in Barry, TX, 1,152 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther east than 78%.
  • 🎯1,078 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21750 and you would come out at 39.66°S, 101.76°E — 951 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 22m.
  • 📏 At 61.6 square miles of land, 21750 is bigger than 65% of ZIP codes — room for about 47 Central Parks.
🌙 The sky over 21750 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population3,417This ZIP3,417
Households1,628This ZIP1,628
Housing units1,818This ZIP1,818
Median age50.1This ZIP50.1Maryland39.4US 38.9
Median household income$60,625This ZIP$60,625Maryland$103,678US $80,734
Median home value$232,500This ZIP$232,500Maryland$419,900US $332,700
Median gross rent$983This ZIP$983Maryland$1,705US $1,413
Bachelor's degree or higher11.9%This ZIP11.9%
Mean commute39.2 minThis ZIP39.2 min
Population density55.4 / sq miThis ZIP55.4 / sq mi

Business and tax activity

Business establishments93This ZIP93
Employees1,095This ZIP1,095
Annual payroll$44,003,000This ZIP$44,003,000
Tax returns filed1,700This ZIP1,700
Total adjusted gross income$96,088,000This ZIP$96,088,000

Land area

Land area61.64 sq miThis ZIP61.64 sq mi
Water area1.62 sq miThis ZIP1.62 sq mi

Other place names in 21750

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

ZIP codes near 21750

ZIPCityDistance
25411 Berkeley Springs, WV 7.9 mi
21766 Little Orleans, MD 8.1 mi
17267 Warfordsburg, PA 10.1 mi
25422 Great Cacapon, WV 10.3 mi
17211 Artemas, PA 11.4 mi
21711 Big Pool, MD 11.5 mi
25427 Hedgesville, WV 12.2 mi
17212 Big Cove Tannery, PA 13.8 mi
17238 Needmore, PA 14.8 mi
15535 Clearville, PA 16.1 mi

Find every ZIP code within 10 miles of 21750 →

Questions about this ZIP code

Where is ZIP code 21750?

21750 is in Hancock, Maryland, in Washington County, part of the Hagerstown-Martinsburg, MD-WV metropolitan area. Its published point location is 39.6623, -78.2360.

What county is 21750 in?

21750 lies in Washington County.

What area code is 21750?

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

What time zone is 21750 in?

21750 uses America/New_York.

How many people live in 21750?

About 3,417 people live in ZIP code 21750, in 1,628 households, at 55.4 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 21750?

$60,625 a year, against $103,678 across Maryland.

What ZIP codes are near 21750?

The closest are 25411 (7.9 mi), 21766 (8.1 mi), 17267 (10.1 mi), 25422 (10.3 mi) and 17211 (11.4 mi).

Is 21750 a PO Box ZIP code?

21750 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21750 ZIP Code — Hancock, Maryland (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21750

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