21715
ZIP 21715 is Brownsville, Maryland, in Washington County; area codes 240, 301 and 227; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Washington
- Metro area
- Hagerstown-Martinsburg, MD-WV
- Population
- 20
- Coordinates
- 39.3788, -77.6607
Weather right now
Asking the National Weather Service…
Where 21715 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 21715 into a pocket calculator and turn it upside down: SILIZ — not quite a word, sorry.
- ➕ As a number, 21,715 = 5 × 43 × 101. Its digits add up to 16, a total 1,922 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101010011010011 - 🏠 Its numerical neighbours: 21714 (Braddock Heights, MD, 8 mi away) and 21716 (Brunswick, MD, 5 mi away).
- 🔄 Backwards, 21715 becomes 51712, which is not a ZIP code at all.
- 👥 27 other ZIP codes are made of exactly the same digits (11572, 11725, 11752, 12157, 12175, 12517, …). The farthest-flung twin is 75211 in Dallas, TX, 1,166 miles away.
- 🧭 Farther north than 51% of all ZIP codes, and farther east than 79%.
- 🎯1,111 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21715 and you would come out at 39.38°S, 102.34°E — 915 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
- 📏 At 0.246 square miles of land, 21715 is bigger than 3% of ZIP codes — about 119 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 20This ZIP20 |
|---|---|
| Households | 14This ZIP14 |
| Housing units | 14This ZIP14 |
| Median age | 66.5This ZIP66.5Maryland39.4US 38.9 |
| Bachelor's degree or higher | 0.0% |
| Population density | 81.3 / sq miThis ZIP81.3 / sq mi |
Land area
| Land area | 0.25 sq miThis ZIP0.25 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 21715
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21715
| ZIP | City | Distance |
|---|---|---|
21758 | Knoxville, MD | 1.8 mi |
21718 | Burkittsville, MD | 2.0 mi |
21779 | Rohrersville, MD | 3.2 mi |
21716 | Brunswick, MD | 4.6 mi |
21755 | Jefferson, MD | 5.1 mi |
21756 | Keedysville, MD | 5.9 mi |
21769 | Middletown, MD | 6.6 mi |
21782 | Sharpsburg, MD | 7.5 mi |
20180 | Lovettsville, VA | 7.7 mi |
25425 | Harpers Ferry, WV | 7.8 mi |
Find every ZIP code within 10 miles of 21715 →
Questions about this ZIP code
Where is ZIP code 21715?
21715 is in Brownsville, Maryland, in Washington County, part of the Hagerstown-Martinsburg, MD-WV metropolitan area. Its published point location is 39.3788, -77.6607.
What county is 21715 in?
21715 lies in Washington County.
What area code is 21715?
Brownsville uses area codes 240, 301 and 227, from NANPA's telephone records.
What time zone is 21715 in?
21715 uses America/New_York.
How many people live in 21715?
About 20 people live in ZIP code 21715, in 14 households, at 81.3 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 21715?
The closest are 21758 (1.8 mi), 21718 (2 mi), 21779 (3.2 mi), 21716 (4.6 mi) and 21755 (5.1 mi).
Is 21715 a PO Box ZIP code?
21715 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21715 ZIP Code — Brownsville, Maryland (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21715
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21715.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.