ZIP code 21821: Deal Island, MD
21821 is a ZIP code in Deal Island, Maryland, mainly in Somerset County, part of the Salisbury, MD metro area. About 797 people live here.
- Population
- 797
- Median household income
- $60,341
- Typical home value
- $206,000+2.9% in 12 months
- Median rent
- $1,615gross, per month
- Median age
- 46
- Homeowners
- 83.2%of occupied homes
Shaded: ZIP code 21821's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 21821 details
| City | Deal Island |
|---|---|
| State | Maryland |
| County | Somerset County |
| Metro area | Salisbury, MD |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 14.7 sq mi, plus 5.1 sq mi of water |
| Population density | 54 people per sq mi |
| Bachelor's degree or higher | 11% of adults 25+ |
| Average commute | 30.9 minutes |
| Center coordinates | 38.16459, -75.91666 |
ZIP codes near 21821
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 21840 | Nanticoke, MD | 5.9 mi | 576 |
| 21867 | Upper Fairmount, MD | 7.7 mi | 60 |
| 21627 | Crocheron, MD | 8.5 mi | 26 |
| 21814 | Bivalve, MD | 8.9 mi | 217 |
| 21836 | Manokin, MD | 9.4 mi | — |
| 21865 | Tyaskin, MD | 9.5 mi | 320 |
| 21871 | Westover, MD | 10.3 mi | 1,764 |
| 21672 | Toddville, MD | 10.5 mi | 161 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 21821?
A typical home in ZIP code 21821 is worth about $206,000 (Zillow Home Value Index). The median household here earns $60,341 a year. See what buying here would cost per month, with Maryland average taxes and insurance filled in.
Monthly payment for a $206,000 homeWhat can a $60,341 income afford?Rental property numbers
About ZIP code 21821
What city is ZIP code 21821?
ZIP code 21821 is in Deal Island, MD, in Somerset County.
What county is ZIP code 21821 in?
21821 is mainly in Somerset County, Maryland.
What is the population of ZIP code 21821?
About 797 people live in ZIP code 21821, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 21821 in?
21821 is in Eastern Time (UTC−5). It observes daylight saving time.