ZIP Codes of Somerset County, MD

Population & People
Population & People
Total Population
23,082
Household Income
Household Income
Median Income
$72,894
Housing
Housing
Total Housing Units
10,208
Business & Economy
Business & Economy
Total Businesses
331
Employment
Employment
Employment Rate
42.23%
Education
Education
Bachelor's Degree+
19.57%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 11 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:11 ZIP Codes (6 Standard, 4 PO Box, 1 Unique) [See All]
Area Codes:410 / 443 / 667
Timezone:Eastern (GMT -05:00)
Local Time:2:12:29 PM
Population:23,082 [See All]
FIPS:24039
CBSA:Salisbury, MD
Land Area:309 sq mi
Water Area:34 sq mi
Coordinates:38.0780, -75.8101
Quick Link:
https://www.zip-codes.com/county/md-somerset.asp
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Maryland's #24 most populous county
23,082 residents across 11 ZIPs — #24 of 24 Maryland counties.

Standout ZIPs in this County


Most Populous
Princess Anne · 10,537 people
45.7% of county total
Highest Income
Ewell · $90,288 median
1.2× county average
Largest Land Area
Princess Anne · 128.8 sq mi
Spans the most ground
Fastest Growth
Westover · 22.2% (10-yr)
2,692 → 3,289 residents
Most Educated
Princess Anne · 27.5% bachelor's+
1,736 of 6,323 adults 25+

Things worth knowing about Somerset County


23,082 residents live across 11 ZIPs covering 309 sq mi, served by 10 distinct USPS-recognized cities.

Population moved from 24,500 to 23,082 from 2014 to 2024 — a -5.8% change. 5 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 21824 (Ewell, $90,288 median) and poorest ZIP 21871 (Westover, $50,524) are 18.3 miles apart — a 1.8× income gap across local geography.

Median home values vary 1.9× across this county — from $108,500 in 21824 (Ewell) to $208,300 in 21853 (Princess Anne).

Density varies 362× across the county — from 25 people/sq mi in 21871 (Westover) to 8,921 in 21890 (Westover).

Educational attainment ranges from 1.0% bachelor's+ in 21824 (Ewell) to 27.5% in 21853 (Princess Anne) — the breadth of educational profiles across the area.

Within Maryland, this is the #24 most populous of 24 counties and ranks #20 for median household income .

Hosts 1 single-entity Unique ZIP: 21890Eastern Correctional Inst .

Weighted by population, the typical household earns about $66,636 across the county — reflecting what a typical resident sees, not a simple ZIP average.

19.6% of adults age 25+ hold a bachelor's degree or higher (3,183 of 16,263 reporting).

6 Standard delivery, 4 PO Box only, 1 single-entity Unique ZIPs serve this county.

Stories about Somerset County


Population decline

Somerset County lost 5.8% of residents between 2014 and 2024. ZIPs that shed the largest share:

Westover
-43.8%
3,140 → 1,764 residents
Crisfield
-12.5%
5,049 → 4,417 residents
Deal Island
-11.0%
896 → 797 residents

All ZIP Codes in Somerset County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
21853Princess AnneStandard10,537$69,697128.8-2.9%
21817CrisfieldStandard4,417$55,72023.7-12.5%
21890WestoverUnique3,2890.422.2%
21838Marion StationStandard1,873$88,43859.012.9%
21871WestoverStandard1,764$50,52471.6-43.8%
21821Deal IslandStandard797$60,34115.5-11.0%
21824EwellStandard264$90,2888.3116.4%
21866TylertonPO Box81$95,2501.850.0%
21867Upper FairmountPO Box600.046.3%
21836ManokinPO Box0.0
21857RehobethPO Box0.0

Adjacent & Nearby Counties