Boundary Atlas

ZIP code 21758: Brunswick, MD

ZIP code 21758 is in Brunswick (21% of residents), Rosemont (5.4%), Garretts Mill (4.7%), Sandy Hook (3.5%) and Yarrowsburg (2.3%), in Frederick County (65%) and Washington County (35%), Maryland. 63% of its residents live outside city limits. It is in Maryland's 6th congressional district. Its state senate districts are State Senate District 4 (65%) and State Senate District 2 (35%); its state house districts are State Legislative District 4 (65%) and State Legislative Subdistrict 2A (35%).

4,809residents (2020 Census)
32.0 sq miland area
6cities and towns
1congressional district
6voting precincts

See it on the mapAll of Maryland

City and county

City or townShare of ZIP residents
Brunswick21%
Rosemont5.4%
Garretts Mill4.7%
Sandy Hook3.5%
Yarrowsburg2.3%
Brownsville0.3%

CountyShare of ZIP residents
Frederick County65%
Washington County35%

Town or county subdivisionShare of ZIP residents
District 12, Petersville64%
District 11, Sandy Hook28%
District 8, Rohrersville6.9%
District 22, Burkittsville0.8%
District 14, Jefferson0.2%

Congressional district

Congressional districtShare of ZIP residents
Maryland's 6th congressional district (MD-06)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (MD-06)April McClain Delaney (D)202-225-2721100%
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 4)Bill Folden (R)65%
State Senator (State Senate District 2)Paul Corderman (R)35%
Delegate (State Legislative District 4)April Miller (R)65%
Delegate (State Legislative District 4)Barrie Ciliberti (R)65%
Delegate (State Legislative District 4)Jesse Pippy (R)65%
Delegate (State Legislative Subdistrict 2A)William Valentine (R)35%
Delegate (State Legislative Subdistrict 2A)William Wivell (R)35%

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 465%
State Senate District 235%

State house districtShare of ZIP residents
State Legislative District 465%
State Legislative Subdistrict 2A35%

Voting precincts

6 voting precincts overlap ZIP 21758. Map them, with each precinct's share of the ZIP's residents.

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ZIP 21758 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.