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zipcodes.pro — ZIP/21790

21790

ZIP 21790 is Tuscarora, Maryland, in Frederick County; area codes 240 and 301; Eastern time.

Type
Standard
Time zone
America/New_York
County
Frederick
Population
170
Coordinates
39.2627, -77.5027
☼ Live from 21790 — Tuscarora, MD

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Local time: —

Where 21790 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 21790
  • 🔢 Type 21790 into a pocket calculator and turn it upside down: OGLIZ — not quite a word, sorry.
  • ➕ As a number, 21,790 = 2 × 5 × 2179. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010100011110
  • 🏠 Its numerical neighbours: 21788 (Thurmont, MD, 23 mi away) and 21791 (Union Bridge, MD, 25 mi away).
  • 🔄 Backwards, 21790 becomes 09712, which is not a ZIP code at all.
  • 👥 53 other ZIP codes are made of exactly the same digits (02719, 02791, 02917, 07192, 07921, 09172, …). The farthest-flung twin is 09721 in APO AE, a military post office, 4,299 miles away.
  • 🧭 Farther north than 51% of all ZIP codes, and farther east than 80%.
  • 🎯1,121 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21790 and you would come out at 39.26°S, 102.50°E — 903 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 56m of daylight. Shortest: 9h 24m.
  • 📏 At 4.8 square miles of land, 21790 is bigger than 18% of ZIP codes — room for about 3.6 Central Parks.
🌙 The sky over 21790 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population170This ZIP170
Households35This ZIP35
Housing units35This ZIP35
Median age29.5This ZIP29.5Maryland39.4US 38.9
Median household income$77,656This ZIP$77,656Maryland$103,678US $80,734
Bachelor's degree or higher0.0%
Mean commute37.9 minThis ZIP37.9 min
Population density35.5 / sq miThis ZIP35.5 / sq mi

Business and tax activity

Business establishments3This ZIP3
Employees25This ZIP25
Annual payroll$1,146,000This ZIP$1,146,000

Land area

Land area4.79 sq miThis ZIP4.79 sq mi
Water area0.82 sq miThis ZIP0.82 sq mi

Other place names in 21790

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

ZIP codes near 21790

ZIPCityDistance
21777 Point Of Rocks, MD 1.8 mi
21710 Adamstown, MD 4.9 mi
20176 Leesburg, VA 5.9 mi
20842 Dickerson, MD 6.4 mi
21717 Buckeystown, MD 6.5 mi
20839 Beallsville, MD 6.8 mi
20180 Lovettsville, VA 7.2 mi
21703 Frederick, MD 7.4 mi
21755 Jefferson, MD 7.6 mi
20838 Barnesville, MD 7.6 mi

Find every ZIP code within 10 miles of 21790 →

Questions about this ZIP code

Where is ZIP code 21790?

21790 is in Tuscarora, Maryland, in Frederick County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metropolitan area. Its published point location is 39.2627, -77.5027.

What county is 21790 in?

21790 lies in Frederick County.

What area code is 21790?

Tuscarora uses area codes 240 and 301, from NANPA's telephone records.

What time zone is 21790 in?

21790 uses America/New_York.

How many people live in 21790?

About 170 people live in ZIP code 21790, in 35 households, at 35.5 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 21790?

$77,656 a year, against $103,678 across Maryland.

What ZIP codes are near 21790?

The closest are 21777 (1.8 mi), 21710 (4.9 mi), 20176 (5.9 mi), 20842 (6.4 mi) and 21717 (6.5 mi).

Is 21790 a PO Box ZIP code?

21790 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21790 ZIP Code — Tuscarora, Maryland (Frederick County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21790

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