Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/21922

21922

ZIP 21922 is in Elkton, Maryland, in Cecil County; area codes 443, 410 and 667; Eastern time. Elkton has 2 ZIP codes; the other is 21921.

Type
No street area
Time zone
America/New_York
County
Cecil
Coordinates
39.6068, -75.8333

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 21921, whose figures describe that area — not this ZIP code.

☼ Live from 21922 — Elkton, MD

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Where 21922 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 21922
  • 🔢 Type 21922 into a pocket calculator and turn it upside down: ZZGIZ — not quite a word, sorry.
  • ➕ As a number, 21,922 = 2 × 97 × 113. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010110100010
  • 🏠 Its numerical neighbours: 21921 (Elkton, MD, 2 mi away) and 21930 (Georgetown, MD, 17 mi away).
  • 🔄 Backwards, 21922 becomes 22912, which is not a ZIP code at all.
  • 👥 10 other ZIP codes are made of exactly the same digits (12229, 12922, 21229, 22192, 22219, 29122, …). The farthest-flung twin is 91222 in Glendale, CA, 2,353 miles away.
  • 🧭 Farther north than 53% of all ZIP codes, and farther east than 85%.
  • 🎯1,206 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21922 and you would come out at 39.61°S, 104.17°E — 841 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 58m of daylight. Shortest: 9h 22m.
🌙 The sky over 21922 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments15This ZIP15
Employees607This ZIP607
Annual payroll$78,465,000This ZIP$78,465,000

Land area

ZIP codes near 21922

ZIPCityDistance
21921 Elkton, MD 2.0 mi
21916 Childs, MD 3.4 mi
21920 Elk Mills, MD 3.4 mi
19702 Newark, DE 5.6 mi
19716 Newark, DE 6.3 mi
19717 Newark, DE 6.7 mi
21901 North East, MD 7.3 mi
19701 Bear, DE 7.4 mi
21915 Chesapeake City, MD 7.7 mi
19708 Kirkwood, DE 7.9 mi

Find every ZIP code within 10 miles of 21922 →

Questions about this ZIP code

Where is ZIP code 21922?

21922 is in Elkton, Maryland, in Cecil County, part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area. Its published point location is 39.6068, -75.8333.

What county is 21922 in?

21922 lies in Cecil County.

What area code is 21922?

Elkton uses area codes 443, 410 and 667, from NANPA's telephone records.

What time zone is 21922 in?

21922 uses America/New_York.

What ZIP codes are near 21922?

The closest are 21921 (2 mi), 21916 (3.4 mi), 21920 (3.4 mi), 19702 (5.6 mi) and 19716 (6.3 mi).

Is 21922 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “21922 ZIP Code — Elkton, Maryland (Cecil County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21922

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/21922.json

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