ZIP code 21661
Where is ZIP code 21661?
Rock Hall, Maryland
Kent County · Standard ZIP code
ZIP code 21661 belongs to Rock Hall, Maryland in Kent County. 21661 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 2,613 people live in the 21661 area, where the median household income is $90,492. The closest ZIP codes are 21620 (Chestertown, 9.7 mi northeast), 21656 (Price, 10.1 mi southeast) and 21690 (Chestertown, 10.1 mi southeast).
| ZIP code | 21661 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Rock Hall |
| State | Maryland (MD) |
| County | Kent County |
| Time zone | Eastern Time · now |
| Area codes | 410, 443, 667 |
| Coordinates | 39.1344, -76.2305 map |
| 3-digit prefix | 216 |
Population and income in 21661
| Population | 2,613 · lower than 61% of Maryland ZIP codes |
|---|---|
| People per square mile | 79 · lower than 81% of Maryland ZIP codes |
| Median age | 58.4 years · higher than 91% of Maryland ZIP codes |
| Men / women | 42% / 58% |
| Median household income | $90,492 · lower than 61% of Maryland ZIP codes |
| Income per person | $53,038 |
| Below the poverty line | 12% |
| Bachelor’s degree or higher | 36% of adults 25+ |
| Median home value | $283,200 · lower than 80% of Maryland ZIP codes |
| Median rent | $1,000 a month |
| Housing units | 1,784 |
| Households | 1,311 (1.97 people on average) |
| Owners / renters | 75% / 25% |
| Land area | 33.01 sq mi (plus 22.06 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 21661. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 21661
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 21620 | Chestertown, MD | 9.7 mi NE | Standard |
| 21656 | Price, MD | 10.1 mi SE | PO Box only |
| 21690 | Chestertown, MD | 10.1 mi SE | Unique |
| 21658 | Queenstown, MD | 10.3 mi SE | Standard |
| 21617 | Centreville, MD | 11.3 mi SE | Standard |
| 21056 | Gibson Island, MD | 11.6 mi W | PO Box only |
| 21619 | Chester, MD | 12.5 mi S | Standard |
| 21052 | Fort Howard, MD | 12.6 mi NW | PO Box only |
| 21409 | Annapolis, MD | 12.8 mi SW | Standard |
| 21623 | Church Hill, MD | 13 mi E | Standard |
| 21638 | Grasonville, MD | 13.1 mi S | Standard |
| 21678 | Worton, MD | 13.2 mi NE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 21661 or measure the distance to another ZIP code.
How to address mail to 21661
123 MAIN ST
ROCK HALL MD 21661
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (21661-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 21661?
- 21661 is a Rock Hall, Maryland ZIP code.
- What county is 21661 in?
- ZIP code 21661 is in Kent County, Maryland.
- What time zone is ZIP code 21661 in?
- 21661 is in the Eastern Time zone (America/New_York).
- What area code is 21661?
- Phone numbers in ZIP code 21661 use area codes 410, 443 and 667.
- What is the population of ZIP code 21661?
- About 2,613 people live in ZIP code 21661, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 21661?
- The median household income in 21661 is $90,492 a year, lower than 61% of Maryland ZIP codes.
- What ZIP codes are near 21661?
- The nearest ZIP codes to 21661 are 21620 (Chestertown, 9.7 miles), 21656 (Price, 10.1 miles), 21690 (Chestertown, 10.1 miles) and 21658 (Queenstown, 10.3 miles).