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zipcodes.pro — ZIP/21638

21638

ZIP 21638 is Grasonville, Maryland, in Queen Anne's County; area codes 410, 667 and 443; Eastern time.

Type
Standard
Time zone
America/New_York
County
Queen Anne's
Population
5,420
Coordinates
38.9402, -76.2076
☼ Live from 21638 — Grasonville, MD

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Local time: —

Where 21638 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 21638
  • 🔢 Type 21638 into a pocket calculator and turn it upside down: BEgIZ — not quite a word, sorry.
  • ➕ As a number, 21,638 = 2 × 31 × 349. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 101010010000110
  • 🏠 Its numerical neighbours: 21636 (Goldsboro, MD, 23 mi away) and 21639 (Greensboro, MD, 23 mi away).
  • 🔄 Backwards, 21638 becomes 83612 — and that is a real ZIP code: Council, ID, 2,092 miles away.
  • 👥 52 other ZIP codes are made of exactly the same digits (12836, 12863, 13628, 13682, 13826, 13862, …). The farthest-flung twin is 83612 in Council, ID, 2,092 miles away.
  • 🧭 Farther south than 51% of all ZIP codes, and farther east than 84%.
  • 🎯1,193 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 21638 and you would come out at 38.94°S, 103.79°E — 832 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 54m of daylight. Shortest: 9h 26m.
  • 📏 At 9.9 square miles of land, 21638 is bigger than 27% of ZIP codes — room for about 7.5 Central Parks.
🌙 The sky over 21638 today
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🌋 Shake report
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Source: USGS.

People and housing

Population5,420This ZIP5,420
Households1,916This ZIP1,916
Housing units2,360This ZIP2,360
Median age42.3This ZIP42.3Maryland39.4US 38.9
Median household income$140,086This ZIP$140,086Maryland$103,678US $80,734
Median home value$569,200This ZIP$569,200Maryland$419,900US $332,700
Median gross rent$1,692This ZIP$1,692Maryland$1,705US $1,413
Bachelor's degree or higher46.7%This ZIP46.7%
Mean commute35.2 minThis ZIP35.2 min
Population density547.6 / sq miThis ZIP547.6 / sq mi

Business and tax activity

Business establishments125This ZIP125
Employees1,310This ZIP1,310
Annual payroll$60,970,000This ZIP$60,970,000
Tax returns filed2,650This ZIP2,650
Total adjusted gross income$341,673,000This ZIP$341,673,000

Land area

Land area9.90 sq miThis ZIP9.90 sq mi
Water area3.95 sq miThis ZIP3.95 sq mi

Other place names in 21638

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

ZIP codes near 21638

ZIPCityDistance
21619 Chester, MD 3.1 mi
21658 Queenstown, MD 3.4 mi
21679 Wye Mills, MD 6.3 mi
21666 Stevensville, MD 6.9 mi
21624 Claiborne, MD 8.2 mi
21656 Price, MD 9.0 mi
21690 Chestertown, MD 9.0 mi
21663 Saint Michaels, MD 10.6 mi
21647 Mcdaniel, MD 10.8 mi
21661 Rock Hall, MD 10.8 mi

Find every ZIP code within 10 miles of 21638 →

Questions about this ZIP code

Where is ZIP code 21638?

21638 is in Grasonville, Maryland, in Queen Anne's County, part of the Baltimore-Columbia-Towson, MD metropolitan area. Its published point location is 38.9402, -76.2076.

What county is 21638 in?

21638 lies in Queen Anne's County.

What area code is 21638?

Grasonville uses area codes 410, 667 and 443, from NANPA's telephone records.

What time zone is 21638 in?

21638 uses America/New_York.

How many people live in 21638?

About 5,420 people live in ZIP code 21638, in 1,916 households, at 547.6 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 21638?

$140,086 a year, against $103,678 across Maryland.

What ZIP codes are near 21638?

The closest are 21619 (3.1 mi), 21658 (3.4 mi), 21679 (6.3 mi), 21666 (6.9 mi) and 21624 (8.2 mi).

Is 21638 a PO Box ZIP code?

21638 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “21638 ZIP Code — Grasonville, Maryland (Queen Anne's County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21638

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