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Where 21871 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.
- 🔢 Type 21871 into a pocket calculator and turn it upside down: ILBIZ — not quite a word, sorry.
- ➕ 21871 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101010101101111 - 🏠 Its numerical neighbours: 21869 (Vienna, MD, 22 mi away) and 21872 (Whaleyville, MD, 32 mi away).
- 🔄 Backwards, 21871 becomes 17812 — and that is a real ZIP code: Beaver Springs, PA, 198 miles away.
- 👥 25 other ZIP codes are made of exactly the same digits (11782, 12187, 12781, 12817, 12871, 17128, …). The farthest-flung twin is 87121 in Albuquerque, NM, 1,733 miles away.
- 🧭 Farther south than 57% of all ZIP codes, and farther east than 85%.
- 🎯1,229 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21871 and you would come out at 38.11°S, 104.26°E — 781 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 49m of daylight. Shortest: 9h 31m.
- 📏 At 67.1 square miles of land, 21871 is bigger than 68% of ZIP codes — room for about 51 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,764This ZIP1,764 |
|---|---|
| Households | 814This ZIP814 |
| Housing units | 945This ZIP945 |
| Median age | 60.2This ZIP60.2Maryland39.4US 38.9 |
| Median household income | $50,524This ZIP$50,524Maryland$103,678US $80,734 |
| Median home value | $185,900This ZIP$185,900Maryland$419,900US $332,700 |
| Bachelor's degree or higher | 18.9%This ZIP18.9% |
| Mean commute | 29.9 minThis ZIP29.9 min |
| Population density | 26.3 / sq miThis ZIP26.3 / sq mi |
Business and tax activity
| Business establishments | 34This ZIP34 |
|---|---|
| Employees | 268This ZIP268 |
| Annual payroll | $11,347,000This ZIP$11,347,000 |
| Tax returns filed | 890This ZIP890 |
| Total adjusted gross income | $52,318,000This ZIP$52,318,000 |
Land area
| Land area | 67.12 sq miThis ZIP67.12 sq mi |
|---|---|
| Water area | 8.10 sq miThis ZIP8.10 sq mi |
Other place names in 21871
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21871
| ZIP | City | Distance |
|---|---|---|
21836 | Manokin, MD | 1.0 mi |
21867 | Upper Fairmount, MD | 2.9 mi |
21890 | Westover, MD | 4.2 mi |
21838 | Marion Station, MD | 6.1 mi |
21857 | Rehobeth, MD | 6.3 mi |
21853 | Princess Anne, MD | 6.8 mi |
21817 | Crisfield, MD | 10.1 mi |
21821 | Deal Island, MD | 10.3 mi |
21851 | Pocomoke City, MD | 11.0 mi |
23426 | Sanford, VA | 12.8 mi |
Find every ZIP code within 10 miles of 21871 →
Questions about this ZIP code
Where is ZIP code 21871?
21871 is in Westover, Maryland, in Somerset County, part of the Salisbury, MD metropolitan area. Its published point location is 38.1068, -75.7415.
What county is 21871 in?
21871 lies in Somerset County.
What area code is 21871?
Westover uses area codes 410 and 667, from NANPA's telephone records.
What time zone is 21871 in?
21871 uses America/New_York.
How many people live in 21871?
About 1,764 people live in ZIP code 21871, in 814 households, at 26.3 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 21871?
$50,524 a year, against $103,678 across Maryland.
What ZIP codes are near 21871?
The closest are 21836 (1 mi), 21867 (2.9 mi), 21890 (4.2 mi), 21838 (6.1 mi) and 21857 (6.3 mi).
Is 21871 a PO Box ZIP code?
21871 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21871 ZIP Code — Westover, Maryland (Somerset County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21871
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21871.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.