Boundary Atlas

ZIP code 21074: Hampstead, MD

ZIP code 21074 is in Hampstead (41% of residents), in Carroll County (91%) and Baltimore County (9.3%), Maryland. 59% of its residents live outside city limits. It is in Maryland's 2nd congressional district. Its state senate district is State Senate District 42; its state house districts are State Legislative Subdistrict 42C (91%) and State Legislative Subdistrict 42A (9.3%).

15,279residents (2020 Census)
37.7 sq miland area
1cities and towns
1congressional district
8voting precincts

See it on the mapAll of Maryland

City and county

City or townShare of ZIP residents
Hampstead41%

CountyShare of ZIP residents
Carroll County91%
Baltimore County9.3%

Town or county subdivisionShare of ZIP residents
District 8, Hampstead84%
District 58.6%
District 6, Manchester6.6%
District 60.6%
District 4<0.1%

Congressional district

Congressional districtShare of ZIP residents
Maryland's 2nd congressional district (MD-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MD-02)Johnny Olszewski, Jr. (D)202-225-3061100%
U.S. SenatorAngela D. Alsobrooks (D)202-224-4524 · contact formstatewide
U.S. SenatorChris Van Hollen (D)202-224-4654 · contact formstatewide
State Senator (State Senate District 42)Chris West (R)100%
Delegate (State Legislative Subdistrict 42C)Josh Stonko (R)91%
Delegate (State Legislative Subdistrict 42A)Alex Harlan (R)9.3%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 42100%

State house districtShare of ZIP residents
State Legislative Subdistrict 42C91%
State Legislative Subdistrict 42A9.3%

Voting precincts

8 voting precincts overlap ZIP 21074. Map them, with each precinct's share of the ZIP's residents.

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ZIP 21074 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.