Boundary Atlas

ZIP code 21871: District 13, Westover, MD

ZIP code 21871 is in Fairmount (17% of residents), Frenchtown-Rumbly (4.5%) and West Pocomoke (3.2%), in Somerset County, Maryland. 75% of its residents live outside city limits. It is in Maryland's 1st congressional district. Its state senate district is State Senate District 38; its state house district is State Legislative Subdistrict 38A.

1,918residents (2020 Census)
67.1 sq miland area
3cities and towns
1congressional district
6voting precincts

See it on the mapAll of Maryland

City and county

City or townShare of ZIP residents
Fairmount17%
Frenchtown-Rumbly4.5%
West Pocomoke3.2%

CountyShare of ZIP residents
Somerset County100%

Town or county subdivisionShare of ZIP residents
District 13, Westover44%
District 6, Fairmount25%
District 3, Brinkleys23%
District 4, Dublin7.9%

Congressional district

Congressional districtShare of ZIP residents
Maryland's 1st congressional district (MD-01)100%

Members of Congress

OfficeMemberContact
U.S. Representative (MD-01)Andy Harris (R)202-225-5311
U.S. SenatorAngela D. Alsobrooks (D)202-224-4524 · contact form
U.S. SenatorChris Van Hollen (D)202-224-4654 · contact form

Members serving now (119th Congress, until January 3, 2027). Source: Members of Congress: the @unitedstates project, congress-legislators (CC0).

State legislative districts

State senate districtShare of ZIP residents
State Senate District 38100%

State house districtShare of ZIP residents
State Legislative Subdistrict 38A100%

Voting precincts

6 voting precincts overlap ZIP 21871. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:21871")

ZIP 21871 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.