Boundary Atlas

ZIP code 21539: Lonaconing, MD

ZIP code 21539 is in Lonaconing (39% of residents), Nikep (3.8%) and Detmold (2.6%), in Allegany County (79%) and Garrett County (21%), Maryland. 54% of its residents live outside city limits. It is in Maryland's 6th congressional district. Its state senate district is State Senate District 1; its state house districts are State Legislative Subdistrict 1A (98%) and State Legislative Subdistrict 1B (1.8%).

2,536residents (2020 Census)
37.1 sq miland area
4cities and towns
1congressional district
6voting precincts

See it on the mapAll of Maryland

City and county

City or townShare of ZIP residents
Lonaconing39%
Nikep3.8%
Detmold2.6%
Gilmore0.3%

CountyShare of ZIP residents
Allegany County79%
Garrett County21%

Town or county subdivisionShare of ZIP residents
District 10, Lonaconing73%
District 15, Avilton19%
District 9, Barton3.9%
District 11, The Elbow2.0%
District 18, Midland/Shaft1.8%
District 31, McCooleland only

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 1)Mike McKay (R)100%
Delegate (State Legislative Subdistrict 1A)Jim Hinebaugh (R)98%
Delegate (State Legislative Subdistrict 1B)Jason Buckel (R)1.8%

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 1100%

State house districtShare of ZIP residents
State Legislative Subdistrict 1A98%
State Legislative Subdistrict 1B1.8%

Voting precincts

6 voting precincts overlap ZIP 21539. Map them, with each precinct's share of the ZIP's residents.

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ZIP 21539 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.