Boundary Atlas

ZIP code 18020: Middletown, PA

ZIP code 18020 is in Middletown (37% of residents), in Northampton County, Pennsylvania. 63% of its residents live outside city limits. It is in Pennsylvania's 7th congressional district. Its state senate district is State Senate District 18; its state house districts are State House District 137 (100%) and State House District 135 (0.4%).

20,582residents (2020 Census)
13.0 sq miland area
2cities and towns
1congressional district
19voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
Middletown37%
Bethlehem0.4%

CountyShare of ZIP residents
Northampton County100%

Town or county subdivisionShare of ZIP residents
Bethlehem township88%
Lower Nazareth township11%
Bethlehem city0.4%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
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 18)Lisa Boscola (Democratic)610-250-5627100%
State Representative (State House District 137)Joe Emrick (R)484-544-0146100%
State Representative (State House District 135)Steve Samuelson (Democratic)610-867-38900.4%

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 18100%

State house districtShare of ZIP residents
State House District 137100%
State House District 1350.4%

Voting precincts

19 voting precincts overlap ZIP 18020. Map them, with each precinct's share of the ZIP's residents.

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ZIP 18020 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.