21613
ZIP 21613 is Cambridge, Maryland, in Dorchester County; area codes 443, 667 and 410; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Dorchester
- Metro area
- Cambridge, MD
- Population
- 17,926
- Coordinates
- 38.5028, -76.0789
Weather right now
Asking the National Weather Service…
Where 21613 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 21613 into a pocket calculator and turn it upside down: EIgIZ — not quite a word, sorry.
- ➕ 21613 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 13, a total 1,179 other ZIP codes share.
- 💾In binary, the way a computer stores it:
101010001101101 - 🏠 Its numerical neighbours: 21612 (Bozman, MD, 20 mi away) and 21617 (Centreville, MD, 38 mi away).
- 🔄 Backwards, 21613 becomes 31612, which is not a ZIP code at all.
- 👥 31 other ZIP codes are made of exactly the same digits (11236, 11362, 12136, 13126, 13162, 13261, …). The farthest-flung twin is 62311 in Augusta, IL, 801 miles away.
- 🧭 Farther south than 55% of all ZIP codes, and farther east than 85%.
- 🎯1,206 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 21613 and you would come out at 38.50°S, 103.92°E — 811 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 14h 51m of daylight. Shortest: 9h 28m.
- 📏 At 153.7 square miles of land, 21613 is bigger than 87% of ZIP codes — room for about 117 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 17,926This ZIP17,926 |
|---|---|
| Households | 7,790This ZIP7,790 |
| Housing units | 9,413This ZIP9,413 |
| Median age | 43.2This ZIP43.2Maryland39.4US 38.9 |
| Median household income | $53,890This ZIP$53,890Maryland$103,678US $80,734 |
| Median home value | $283,900This ZIP$283,900Maryland$419,900US $332,700 |
| Median gross rent | $1,042This ZIP$1,042Maryland$1,705US $1,413 |
| Bachelor's degree or higher | 21.7%This ZIP21.7% |
| Mean commute | 25.0 minThis ZIP25.0 min |
| Population density | 116.7 / sq miThis ZIP116.7 / sq mi |
Business and tax activity
| Business establishments | 484This ZIP484 |
|---|---|
| Employees | 6,175This ZIP6,175 |
| Annual payroll | $309,734,000This ZIP$309,734,000 |
| Tax returns filed | 8,880This ZIP8,880 |
| Total adjusted gross income | $512,729,000This ZIP$512,729,000 |
Land area
| Land area | 153.67 sq miThis ZIP153.67 sq mi |
|---|---|
| Water area | 40.89 sq miThis ZIP40.89 sq mi |
Other place names in 21613
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 21613
| ZIP | City | Distance |
|---|---|---|
21677 | Woolford, MD | 5.6 mi |
21622 | Church Creek, MD | 7.5 mi |
21835 | Linkwood, MD | 8.0 mi |
21648 | Madison, MD | 8.7 mi |
21631 | East New Market, MD | 9.3 mi |
21673 | Trappe, MD | 9.8 mi |
21664 | Secretary, MD | 10.2 mi |
21626 | Crapo, MD | 11.1 mi |
21869 | Vienna, MD | 11.9 mi |
21669 | Taylors Island, MD | 12.0 mi |
Find every ZIP code within 10 miles of 21613 →
Questions about this ZIP code
Where is ZIP code 21613?
21613 is in Cambridge, Maryland, in Dorchester County, part of the Cambridge, MD micropolitan area. Its published point location is 38.5028, -76.0789.
What county is 21613 in?
21613 lies in Dorchester County.
What area code is 21613?
Cambridge uses area codes 443, 667 and 410, from NANPA's telephone records.
What time zone is 21613 in?
21613 uses America/New_York.
How many people live in 21613?
About 17,926 people live in ZIP code 21613, in 7,790 households, at 116.7 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 21613?
$53,890 a year, against $103,678 across Maryland.
What ZIP codes are near 21613?
The closest are 21677 (5.6 mi), 21622 (7.5 mi), 21835 (8 mi), 21648 (8.7 mi) and 21631 (9.3 mi).
Is 21613 a PO Box ZIP code?
21613 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “21613 ZIP Code — Cambridge, Maryland (Dorchester County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/21613
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/21613.json Underlying data is public domain or openly licensed — sources, vintages and licences.