ZIP code 21660
Where is ZIP code 21660?
Ridgely, Maryland
Caroline County · Standard ZIP code
ZIP code 21660 belongs to Ridgely, Maryland in Caroline County. 21660 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 410, 443 and 667. About 4,132 people live in the 21660 area, where the median household income is $80,469. The closest ZIP codes are 21641 (Hillsboro, 3.8 mi southwest), 21639 (Greensboro, 4.3 mi east) and 21657 (Queen Anne, 5.1 mi west).
| ZIP code | 21660 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Ridgely |
| State | Maryland (MD) |
| County | Caroline County |
| Time zone | Eastern Time · now |
| Area codes | 410, 443, 667 |
| Coordinates | 38.9568, -75.8848 map |
| 3-digit prefix | 216 |
Population and income in 21660
| Population | 4,132 · lower than 54% of Maryland ZIP codes |
|---|---|
| People per square mile | 127 · lower than 73% of Maryland ZIP codes |
| Median age | 35.6 years · lower than 86% of Maryland ZIP codes |
| Men / women | 48% / 52% |
| Median household income | $80,469 · lower than 77% of Maryland ZIP codes |
| Income per person | $34,931 |
| Below the poverty line | 8.1% |
| Bachelor’s degree or higher | 17% of adults 25+ |
| Median home value | $359,300 · lower than 65% of Maryland ZIP codes |
| Median rent | $945 a month |
| Housing units | 1,516 |
| Households | 1,457 (2.77 people on average) |
| Owners / renters | 77% / 23% |
| Land area | 32.66 sq mi (plus 0.04 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21660. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21660
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21641 | Hillsboro, MD | 3.8 mi SW | PO Box only |
| 21639 | Greensboro, MD | 4.3 mi E | Standard |
| 21657 | Queen Anne, MD | 5.1 mi W | Standard |
| 21636 | Goldsboro, MD | 6.7 mi NE | Standard |
| 21629 | Denton, MD | 7.2 mi S | Standard |
| 21625 | Cordova, MD | 8.7 mi SW | Standard |
| 21640 | Henderson, MD | 9 mi NE | Standard |
| 21679 | Wye Mills, MD | 10.7 mi W | Standard |
| 21617 | Centreville, MD | 11 mi NW | Standard |
| 21644 | Ingleside, MD | 11.2 mi N | Standard |
| 21607 | Barclay, MD | 12 mi N | Standard |
| 21649 | Marydel, MD | 12.4 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21660 or measure the distance to another ZIP code.
How to address mail to 21660
123 MAIN ST
RIDGELY MD 21660
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21660-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21660?
- 21660 is a Ridgely, Maryland ZIP code.
- What county is 21660 in?
- ZIP code 21660 is in Caroline County, Maryland.
- What time zone is ZIP code 21660 in?
- 21660 is in the Eastern Time zone (America/New_York).
- What area code is 21660?
- Phone numbers in ZIP code 21660 use area codes 410, 443 and 667.
- What is the population of ZIP code 21660?
- About 4,132 people live in ZIP code 21660, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21660?
- The median household income in 21660 is $80,469 a year, lower than 77% of Maryland ZIP codes.
- What ZIP codes are near 21660?
- The nearest ZIP codes to 21660 are 21641 (Hillsboro, 3.8 miles), 21639 (Greensboro, 4.3 miles), 21657 (Queen Anne, 5.1 miles) and 21636 (Goldsboro, 6.7 miles).