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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/21733

21733

ZIP 21733 is Fairplay, Maryland, in Washington County; area codes 240, 301 and 227; Eastern time.

Type
Standard
Time zone
America/New_York
County
Washington
Population
1,275
Coordinates
39.5500, -77.7584
☼ Live from 21733 — Fairplay, MD

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Local time: —

Where 21733 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 21733
  • 🔢 Type 21733 into a pocket calculator and turn it upside down: EELIZ — not quite a word, sorry.
  • ➕ As a number, 21,733 = 103 × 211. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010011100101
  • 🏠 Its numerical neighbours: 21727 (Emmitsburg, MD, 25 mi away) and 21734 (Funkstown, MD, 5 mi away).
  • 🔄 Backwards, 21733 becomes 33712 — and that is a real ZIP code: Saint Petersburg, FL, 863 miles away.
  • 👥 28 other ZIP codes are made of exactly the same digits (12733, 13327, 13732, 17233, 17323, 17332, …). The farthest-flung twin is 73132 in Oklahoma City, OK, 1,121 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther east than 79%.
  • 🎯1,105 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21733 and you would come out at 39.55°S, 102.24°E — 925 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 58m of daylight. Shortest: 9h 22m.
  • 📏 At 5.8 square miles of land, 21733 is bigger than 20% of ZIP codes — room for about 4.4 Central Parks.
🌙 The sky over 21733 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population1,275This ZIP1,275
Households471This ZIP471
Housing units480This ZIP480
Median age41.2This ZIP41.2Maryland39.4US 38.9
Median household income$109,896This ZIP$109,896Maryland$103,678US $80,734
Median home value$291,800This ZIP$291,800Maryland$419,900US $332,700
Bachelor's degree or higher24.4%This ZIP24.4%
Mean commute40.6 minThis ZIP40.6 min
Population density218.3 / sq miThis ZIP218.3 / sq mi

Business and tax activity

Business establishments14This ZIP14
Employees72This ZIP72
Annual payroll$3,159,000This ZIP$3,159,000
Tax returns filed600This ZIP600
Total adjusted gross income$52,116,000This ZIP$52,116,000

Land area

Land area5.84 sq miThis ZIP5.84 sq mi
Water area0.00 sq mi

Other place names in 21733

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

ZIP codes near 21733

ZIPCityDistance
21781 Saint James, MD 1.5 mi
21746 Hagerstown, MD 2.6 mi
21795 Williamsport, MD 4.1 mi
21734 Funkstown, MD 4.8 mi
21713 Boonsboro, MD 5.0 mi
21740 Hagerstown, MD 5.7 mi
21782 Sharpsburg, MD 6.5 mi
21741 Hagerstown, MD 6.7 mi
21747 Hagerstown, MD 6.7 mi
21749 Hagerstown, MD 6.7 mi

Find every ZIP code within 10 miles of 21733 →

Questions about this ZIP code

Where is ZIP code 21733?

21733 is in Fairplay, Maryland, in Washington County, part of the Hagerstown-Martinsburg, MD-WV metropolitan area. Its published point location is 39.5500, -77.7584.

What county is 21733 in?

21733 lies in Washington County.

What area code is 21733?

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

What time zone is 21733 in?

21733 uses America/New_York.

How many people live in 21733?

About 1,275 people live in ZIP code 21733, in 471 households, at 218.3 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 21733?

$109,896 a year, against $103,678 across Maryland.

What ZIP codes are near 21733?

The closest are 21781 (1.5 mi), 21746 (2.6 mi), 21795 (4.1 mi), 21734 (4.8 mi) and 21713 (5 mi).

Is 21733 a PO Box ZIP code?

21733 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21733 ZIP Code — Fairplay, Maryland (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21733

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