Plain

County ZIP codes · Maryland · FIPS 24039

Somerset County, MD ZIP Codes

Somerset County, Maryland has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 11 residential and 2 for PO boxes or a single organization. 9 of the residential ones lie mainly in Somerset County and 2 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $55,720 in 21817 (Crisfield) to $88,438 in 21838 (Marion Station) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Somerset County?

21817 · Crisfield: $56k21821 · Deal Island: $60k21822 · Eden: $85k21824 · Ewell: $90k21838 · Marion Station: $88k21851 · Pocomoke City: $53k21853 · Princess Anne: $70k21866 · Tylerton: $95k21867 · Upper Fairmount: –21871 · Westover: $51k21890 · Westover: –218532185121871218222183821821218172182421817 · Crisfield: $56k21821 · Deal Island: $60k21822 · Eden: $85k21824 · Ewell: $90k21838 · Marion Station: $88k21851 · Pocomoke City: $53k21853 · Princess Anne: $70k21866 · Tylerton: $95k21867 · Upper Fairmount: –21871 · Westover: $51k21890 · Westover: –218532185121871218222183821821218172182421817 · Crisfield: $56k21821 · Deal Island: $60k21822 · Eden: $85k21824 · Ewell: $90k21838 · Marion Station: $88k21851 · Pocomoke City: $53k21853 · Princess Anne: $70k21866 · Tylerton: $95k21867 · Upper Fairmount: –21871 · Westover: $51k21890 · Westover: –218532185121871218222183821821
The residential ZIP codes of Somerset County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 10 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 11 residential ZIP codes in Somerset County

9 ZIP codes lie mainly in Somerset County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Somerset County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
21853 Princess Anne 10,537 92 $70k $208k 100%
21817 Crisfield 4,417 305 $56k $161k 100%
21890 Westover 3,289 9,370 – – 100%
21838 Marion Station 1,873 34 $88k $202k 100%
21871 Westover 1,764 26 $51k $186k 100%
21821 Deal Island 797 54 $60k $188k 100%
21824 Ewell 264 116 $90k $109k 100%
21866 Tylerton 81 659 $95k $178k 100%
21867 Upper Fairmount 60 255 – – 100%

Partly in Somerset County

Residential ZIP codes mainly in another county that reach at least 1% into Somerset County, by their share here
In this county
21822 Eden 2,926 76 $85k $278k 24%
21851 Pocomoke City 7,297 70 $53k $207k 20%

Download the 13 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

2 ZIP codes of Somerset County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Somerset County and in the neighboring counties
ZIPIn SomersetElsewhere
2185120%Worcester County 80%
2182224%Wicomico County 50%; Worcester County 26%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Somerset County without a residential area (GeoNames postal codes)
ZIPPostal name
21836Manokin
21857Rehobeth

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Somerset County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Somerset County starts with 218.

Three-digit prefixes of Somerset County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Somerset County's
PrefixSectional centerHereAll codes
218 Eastern Shore, MD (SCF 216) 13 43

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.