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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/21863

21863

ZIP 21863 is Snow Hill, Maryland, in Worcester County; area codes 410, 443 and 667; Eastern time.

Type
Standard
Time zone
America/New_York
County
Worcester
Metro area
Ocean Pines, MD
Population
5,281
Coordinates
38.1879, -75.3990
☼ Live from 21863 — Snow Hill, MD

Weather right now

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Local time: —

Where 21863 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 21863
  • 🔢 Type 21863 into a pocket calculator and turn it upside down: EgBIZ — not quite a word, sorry.
  • ➕ 21863 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010101100111
  • 🏠 Its numerical neighbours: 21862 (Showell, MD, 18 mi away) and 21864 (Stockton, MD, 11 mi away).
  • 🔄 Backwards, 21863 becomes 36812, which is not a ZIP code at all.
  • 👥 52 other ZIP codes are made of exactly the same digits (12836, 12863, 13628, 13682, 13826, 13862, …). The farthest-flung twin is 83612 in Council, ID, 2,153 miles away.
  • 🧭 Farther south than 57% of all ZIP codes, and farther east than 86%.
  • 🎯1,246 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21863 and you would come out at 38.19°S, 104.60°E — 768 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 49m of daylight. Shortest: 9h 30m.
  • 📏 At 122.5 square miles of land, 21863 is bigger than 82% of ZIP codes — room for about 93 Central Parks.
🌙 The sky over 21863 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population5,281This ZIP5,281
Households2,113This ZIP2,113
Housing units2,289This ZIP2,289
Median age40.1This ZIP40.1Maryland39.4US 38.9
Median household income$61,975This ZIP$61,975Maryland$103,678US $80,734
Median home value$263,600This ZIP$263,600Maryland$419,900US $332,700
Median gross rent$1,002This ZIP$1,002Maryland$1,705US $1,413
Bachelor's degree or higher24.3%This ZIP24.3%
Mean commute22.8 minThis ZIP22.8 min
Population density43.1 / sq miThis ZIP43.1 / sq mi

Business and tax activity

Business establishments93This ZIP93
Employees614This ZIP614
Annual payroll$28,663,000This ZIP$28,663,000
Tax returns filed2,360This ZIP2,360
Total adjusted gross income$167,253,000This ZIP$167,253,000

Land area

Land area122.54 sq miThis ZIP122.54 sq mi
Water area4.73 sq miThis ZIP4.73 sq mi

Other place names in 21863

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

ZIP codes near 21863

ZIPCityDistance
21829 Girdletree, MD 6.4 mi
21841 Newark, MD 6.9 mi
21852 Powellville, MD 9.8 mi
21864 Stockton, MD 10.8 mi
21851 Pocomoke City, MD 10.9 mi
21804 Salisbury, MD 11.3 mi
21850 Pittsville, MD 12.0 mi
23356 Greenbackville, VA 12.3 mi
21849 Parsonsburg, MD 12.6 mi
21811 Berlin, MD 13.3 mi

Find every ZIP code within 10 miles of 21863 →

Questions about this ZIP code

Where is ZIP code 21863?

21863 is in Snow Hill, Maryland, in Worcester County, part of the Ocean Pines, MD micropolitan area. Its published point location is 38.1879, -75.3990.

What county is 21863 in?

21863 lies in Worcester County.

What area code is 21863?

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

What time zone is 21863 in?

21863 uses America/New_York.

How many people live in 21863?

About 5,281 people live in ZIP code 21863, in 2,113 households, at 43.1 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 21863?

$61,975 a year, against $103,678 across Maryland.

What ZIP codes are near 21863?

The closest are 21829 (6.4 mi), 21841 (6.9 mi), 21852 (9.8 mi), 21864 (10.8 mi) and 21851 (10.9 mi).

Is 21863 a PO Box ZIP code?

21863 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21863 ZIP Code — Snow Hill, Maryland (Worcester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21863

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