Boundary Atlas

ZIP code 18103: Allentown, PA

ZIP code 18103 is in Allentown (66% of residents), Dorneyville (9.5%) and Wescosville (4.7%), in Lehigh County, Pennsylvania. 20% of its residents live outside city limits. It is in Pennsylvania's 7th congressional district. Its state senate districts are State Senate District 14 (88%) and State Senate District 16 (12%); its state house districts are State House District 134 (76%), State House District 22 (10%), State House District 187 (7.7%), State House District 132 (4.4%) and State House District 131 (1.7%).

48,358residents (2020 Census)
17.2 sq miland area
3cities and towns
1congressional district
26voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
Allentown66%
Dorneyville9.5%
Wescosville4.7%

CountyShare of ZIP residents
Lehigh County100%

Town or county subdivisionShare of ZIP residents
Allentown city66%
Salisbury township23%
Lower Macungie township7.7%
South Whitehall township3.0%
Upper Saucon township0.1%

Congressional district

Congressional districtShare of ZIP residents
Pennsylvania's 7th congressional district (PA-07)100%

Elected officials

OfficeMemberContactShare of residents
MayorMatt Tuerk610-437-754666%
U.S. Representative (PA-07)Ryan Mackenzie (R)202-225-6411100%
U.S. SenatorDavid McCormick (R)202-224-6324 · contact formstatewide
U.S. SenatorJohn Fetterman (D)202-224-4254 · contact formstatewide
State Senator (State Senate District 14)Nick Miller (Democratic)610-821-846888%
State Senator (State Senate District 16)Jarrett Coleman (R)267-551-374412%
State Representative (State House District 134)Pete Schweyer (Democratic)610-791-627076%
State Representative (State House District 22)Ana Tiburcio (Democratic)484-656-774410%
State Representative (State House District 187)Gary Day (R)610-965-99337.7%
State Representative (State House District 132)Mike Schlossberg (Democratic)610-821-55774.4%
State Representative (State House District 131)Milou Mackenzie (R)215-679-31521.7%

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); 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 1488%
State Senate District 1612%

State house districtShare of ZIP residents
State House District 13476%
State House District 2210%
State House District 1877.7%
State House District 1324.4%
State House District 1311.7%

Voting precincts

26 voting precincts overlap ZIP 18103. Map them, with each precinct's share of the ZIP's residents.

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ZIP 18103 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.