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Where 21557 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 21557 into a pocket calculator and turn it upside down: LSSIZ — not quite a word, sorry.
- ➕ 21557 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:
101010000110101 - 🏠 Its numerical neighbours: 21556 (Pinto, MD, 6 mi away) and 21560 (Spring Gap, MD, 12 mi away).
- 🔄 Backwards, 21557 becomes 75512, which is not a ZIP code at all.
- 👥 31 other ZIP codes are made of exactly the same digits (12575, 15257, 15275, 15725, 15752, 17255, …). The farthest-flung twin is 57521 in Belvidere, SD, 1,182 miles away.
- 🧭 Farther north than 52% of all ZIP codes, and farther east than 77%.
- 🎯1,043 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21557 and you would come out at 39.52°S, 101.07°E — 979 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 58m of daylight. Shortest: 9h 22m.
- 📏 At 26.7 square miles of land, 21557 is bigger than 43% of ZIP codes — room for about 20 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,481This ZIP1,481 |
|---|---|
| Households | 715This ZIP715 |
| Housing units | 817This ZIP817 |
| Median age | 45.3This ZIP45.3Maryland39.4US 38.9 |
| Median household income | $34,936This ZIP$34,936Maryland$103,678US $80,734 |
| Median home value | $123,300This ZIP$123,300Maryland$419,900US $332,700 |
| Bachelor's degree or higher | 19.5%This ZIP19.5% |
| Mean commute | 21.9 minThis ZIP21.9 min |
| Population density | 55.5 / sq miThis ZIP55.5 / sq mi |
Business and tax activity
| Business establishments | 17This ZIP17 |
|---|---|
| Employees | 46This ZIP46 |
| Annual payroll | $2,030,000This ZIP$2,030,000 |
| Tax returns filed | 830This ZIP830 |
| Total adjusted gross income | $45,444,000This ZIP$45,444,000 |
Land area
| Land area | 26.70 sq miThis ZIP26.70 sq mi |
|---|---|
| Water area | 0.48 sq miThis ZIP0.48 sq mi |
Other place names in 21557
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21557
| ZIP | City | Distance |
|---|---|---|
21542 | Midland, MD | 4.9 mi |
21556 | Pinto, MD | 5.6 mi |
21562 | Westernport, MD | 6.0 mi |
21521 | Barton, MD | 6.6 mi |
21539 | Lonaconing, MD | 6.6 mi |
21505 | Cumberland, MD | 6.7 mi |
26750 | Piedmont, WV | 7.0 mi |
21540 | Luke, MD | 7.6 mi |
21543 | Midlothian, MD | 8.5 mi |
21523 | Bloomington, MD | 8.5 mi |
Find every ZIP code within 10 miles of 21557 →
Questions about this ZIP code
Where is ZIP code 21557?
21557 is in Rawlings, Maryland, in Allegany County, part of the Cumberland, MD-WV micropolitan area. Its published point location is 39.5229, -78.9277.
What county is 21557 in?
21557 lies in Allegany County.
What area code is 21557?
Rawlings uses area codes 240, 227 and 301, from NANPA's telephone records.
What time zone is 21557 in?
21557 uses America/New_York.
How many people live in 21557?
About 1,481 people live in ZIP code 21557, in 715 households, at 55.5 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 21557?
$34,936 a year, against $103,678 across Maryland.
What ZIP codes are near 21557?
The closest are 21542 (4.9 mi), 21556 (5.6 mi), 21562 (6 mi), 21521 (6.6 mi) and 21539 (6.6 mi).
Is 21557 a PO Box ZIP code?
21557 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21557 ZIP Code — Rawlings, Maryland (Allegany County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21557
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21557.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.