Boundary Atlas

ZIP code 21047: Fallston, MD

ZIP code 21047 is in Fallston (65% of residents) and Pleasant Hills (21%), in Harford County, Maryland. 14% of its residents live outside city limits. It is in Maryland's 1st congressional district. Its state senate districts are State Senate District 7 (74%) and State Senate District 35 (26%); its state house districts are State Legislative Subdistrict 7B (74%) and State Legislative Subdistrict 35A (26%).

12,876residents (2020 Census)
22.5 sq miland area
3cities and towns
1congressional district
4voting precincts

See it on the mapAll of Maryland

City and county

City or townShare of ZIP residents
Fallston65%
Pleasant Hills21%
Jarrettsville<0.1%

CountyShare of ZIP residents
Harford County100%

Town or county subdivisionShare of ZIP residents
District 3, Bel Air72%
District 4, Marshall28%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MD-01)Andy Harris (R)202-225-5311100%
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 7)J.B. Jennings (R)410-870-584874%
State Senator (State Senate District 35)Jason Gallion (R)26%
Delegate (State Legislative Subdistrict 7B)Lauren Arikan (R)74%
Delegate (State Legislative Subdistrict 35A)Mike Griffith (R)26%
Delegate (State Legislative Subdistrict 35A)Teresa Reilly (R)26%

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 774%
State Senate District 3526%

State house districtShare of ZIP residents
State Legislative Subdistrict 7B74%
State Legislative Subdistrict 35A26%

Voting precincts

4 voting precincts overlap ZIP 21047. Map them, with each precinct's share of the ZIP's residents.

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ZIP 21047 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.