21930
ZIP 21930 is Georgetown, Maryland, in Cecil County; area codes 667 and 410; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Cecil
- Metro area
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD
- Population
- 25
- Coordinates
- 39.3701, -75.8873
Weather right now
Asking the National Weather Service…
Where 21930 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 21930 into a pocket calculator and turn it upside down: OEGIZ — not quite a word, sorry.
- ➕ As a number, 21,930 = 2 × 3 × 5 × 17 × 43. Its digits add up to 15, a total 1,657 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101010110101010 - 🏠 Its numerical neighbours: 21922 (Elkton, MD, 17 mi away) and 22003 (Annandale, VA, 80 mi away).
- 🔄 Backwards, 21930 becomes 03912, which is not a ZIP code at all.
- 👥 65 other ZIP codes are made of exactly the same digits (01923, 02139, 03291, 09123, 09132, 09213, …). The farthest-flung twin is 09213 in APO AE, a military post office, 3,990 miles away.
- 🧭 Farther north than 51% of all ZIP codes, and farther east than 85%.
- 🎯1,205 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21930 and you would come out at 39.37°S, 104.11°E — 834 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 57m of daylight. Shortest: 9h 23m.
- 📏 At 0.736 square miles of land, 21930 is bigger than 7% of ZIP codes — about 356 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 25This ZIP25 |
|---|---|
| Households | 7This ZIP7 |
| Housing units | 45This ZIP45 |
| Median age | 68.1This ZIP68.1Maryland39.4US 38.9 |
| Bachelor's degree or higher | 0.0% |
| Population density | 34.0 / sq miThis ZIP34.0 / sq mi |
Business and tax activity
| Business establishments | 8This ZIP8 |
|---|---|
| Employees | 87This ZIP87 |
| Annual payroll | $2,652,000This ZIP$2,652,000 |
Land area
| Land area | 0.74 sq miThis ZIP0.74 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
ZIP codes near 21930
| ZIP | City | Distance |
|---|---|---|
21913 | Cecilton, MD | 3.2 mi |
21635 | Galena, MD | 3.3 mi |
21919 | Earleville, MD | 4.2 mi |
21912 | Warwick, MD | 5.0 mi |
21645 | Kennedyville, MD | 5.3 mi |
21650 | Massey, MD | 5.9 mi |
21651 | Millington, MD | 8.0 mi |
21915 | Chesapeake City, MD | 9.0 mi |
21667 | Still Pond, MD | 9.0 mi |
21628 | Crumpton, MD | 9.6 mi |
Find every ZIP code within 10 miles of 21930 →
Questions about this ZIP code
Where is ZIP code 21930?
21930 is in Georgetown, Maryland, in Cecil County, part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan area. Its published point location is 39.3701, -75.8873.
What county is 21930 in?
21930 lies in Cecil County.
What area code is 21930?
Georgetown uses area codes 667 and 410, from NANPA's telephone records.
What time zone is 21930 in?
21930 uses America/New_York.
How many people live in 21930?
About 25 people live in ZIP code 21930, in 7 households, at 34.0 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 21930?
The closest are 21913 (3.2 mi), 21635 (3.3 mi), 21919 (4.2 mi), 21912 (5 mi) and 21645 (5.3 mi).
Is 21930 a PO Box ZIP code?
21930 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21930 ZIP Code — Georgetown, Maryland (Cecil County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21930
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21930.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.