21719
ZIP 21719 is Cascade, Maryland, mostly in Washington County; area codes 240 and 301; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Washington +1 more
- Metro area
- Hagerstown-Martinsburg, MD-WV
- Population
- 1,178
- Coordinates
- 39.7045, -77.5005
Weather right now
Asking the National Weather Service…
Where 21719 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 21719 into a pocket calculator and turn it upside down: GILIZ — not quite a word, sorry.
- ➕ As a number, 21,719 = 37 × 587. Its digits add up to 20, a total 2,586 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101010011010111 - 🏠 Its numerical neighbours: 21718 (Burkittsville, MD, 23 mi away) and 21720 (Cavetown, MD, 6 mi away).
- 🔄 Backwards, 21719 becomes 91712, which is not a ZIP code at all.
- 👥 30 other ZIP codes are made of exactly the same digits (11729, 11792, 11972, 12197, 12719, 12791, …). The farthest-flung twin is 97112 in Cloverdale, OR, 2,361 miles away.
- 🧭 Farther north than 54% of all ZIP codes, and farther east than 80%.
- 🎯1,117 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21719 and you would come out at 39.70°S, 102.50°E — 919 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 59m of daylight. Shortest: 9h 21m.
- 📏 At 4.1 square miles of land, 21719 is bigger than 17% of ZIP codes — room for about 3.1 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,178This ZIP1,178 |
|---|---|
| Households | 494This ZIP494 |
| Housing units | 603This ZIP603 |
| Median age | 39.3This ZIP39.3Maryland39.4US 38.9 |
| Median household income | $65,809This ZIP$65,809Maryland$103,678US $80,734 |
| Median home value | $214,100This ZIP$214,100Maryland$419,900US $332,700 |
| Median gross rent | $1,460This ZIP$1,460Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 21.3%This ZIP21.3% |
| Mean commute | 36.1 minThis ZIP36.1 min |
| Population density | 284.7 / sq miThis ZIP284.7 / sq mi |
Business and tax activity
| Business establishments | 18This ZIP18 |
|---|---|
| Employees | 111This ZIP111 |
| Annual payroll | $3,459,000This ZIP$3,459,000 |
| Tax returns filed | 700This ZIP700 |
| Total adjusted gross income | $41,292,000This ZIP$41,292,000 |
Land area
| Land area | 4.14 sq miThis ZIP4.14 sq mi |
|---|---|
| Water area | 0.03 sq miThis ZIP0.03 sq mi |
Counties 21719 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Washington County | 97.4% |
| Frederick County | 2.6% |
Other place names in 21719
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21719
| ZIP | City | Distance |
|---|---|---|
17250 | Rouzerville, PA | 2.5 mi |
21780 | Sabillasville, MD | 2.7 mi |
17214 | Blue Ridge Summit, PA | 3.4 mi |
21783 | Smithsburg, MD | 4.6 mi |
21720 | Cavetown, MD | 6.0 mi |
17268 | Waynesboro, PA | 6.3 mi |
17320 | Fairfield, PA | 7.5 mi |
17247 | Quincy, PA | 7.7 mi |
17272 | Zullinger, PA | 8.2 mi |
21742 | Hagerstown, MD | 8.3 mi |
Find every ZIP code within 10 miles of 21719 →
Questions about this ZIP code
Where is ZIP code 21719?
21719 is in Cascade, Maryland, in Washington County, part of the Hagerstown-Martinsburg, MD-WV metropolitan area. Its published point location is 39.7045, -77.5005.
What county is 21719 in?
21719 spans 2 counties: Washington County and Frederick County. Most of it falls in Washington County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 21719?
Cascade uses area codes 240 and 301, from NANPA's telephone records.
What time zone is 21719 in?
21719 uses America/New_York.
How many people live in 21719?
About 1,178 people live in ZIP code 21719, in 494 households, at 284.7 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 21719?
$65,809 a year, against $103,678 across Maryland.
What ZIP codes are near 21719?
The closest are 17250 (2.5 mi), 21780 (2.7 mi), 17214 (3.4 mi), 21783 (4.6 mi) and 21720 (6 mi).
Is 21719 a PO Box ZIP code?
21719 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21719 ZIP Code — Cascade, Maryland (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21719
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21719.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.