Boundary Atlas

ZIP code 15236: Baldwin, PA

ZIP code 15236 is in Baldwin (37% of residents), Pleasant Hills (25%), Whitehall (24%), Bethel Park (2.6%) and West Mifflin (2.0%), in Allegheny County, Pennsylvania. 9.5% of its residents live outside city limits. It is in Pennsylvania's 12th congressional district (100%) and Pennsylvania's 17th congressional district (<0.1%). Its state senate districts are State Senate District 45 (63%), State Senate District 37 (37%) and State Senate District 43 (<0.1%); its state house districts are State House District 38 (63%), State House District 39 (35%), State House District 40 (2.6%), State House District 36 (0.2%) and State House District 42 (<0.1%).

31,594residents (2020 Census)
10.7 sq miland area
8cities and towns
2congressional districts
43voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
Baldwin37%
Pleasant Hills25%
Whitehall24%
Bethel Park2.6%
West Mifflin2.0%
Brentwood0.2%
Castle Shannon<0.1%
Jefferson Hills<0.1%

CountyShare of ZIP residents
Allegheny County100%

Town or county subdivisionShare of ZIP residents
Baldwin borough37%
Pleasant Hills borough25%
Whitehall borough24%
South Park township9.1%
Bethel Park municipality2.6%
West Mifflin borough2.0%
Brentwood borough0.2%
Castle Shannon borough<0.1%
Jefferson Hills borough<0.1%
Pittsburgh city<0.1%

Congressional districts

Congressional districtShare of ZIP residents
Pennsylvania's 12th congressional district (PA-12)100%
Pennsylvania's 17th congressional district (PA-17)<0.1%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (PA-12)Summer L. Lee (D)202-225-2135100%
U.S. Representative (PA-17)Christopher R. Deluzio (D)202-225-2301<0.1%
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 45)Nick Pisciottano (Democratic)412-664-520063%
State Senator (State Senate District 37)Devlin Robinson (R)412-643-302037%
State Senator (State Senate District 43)Jay Costa (Democratic)412-578-8457<0.1%
State Representative (State House District 38)John Inglis (Democratic)412-466-194063%
State Representative (State House District 39)Andrew Kuzma (R)412-382-200935%
State Representative (State House District 40)Natalie Mihalek (R)724-942-20452.6%
State Representative (State House District 36)Jessica Benham (Democratic)412-881-42080.2%
State Representative (State House District 42)Jen Mazzocco (Democratic)412-343-3870<0.1%

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 4563%
State Senate District 3737%
State Senate District 43<0.1%

State house districtShare of ZIP residents
State House District 3863%
State House District 3935%
State House District 402.6%
State House District 360.2%
State House District 42<0.1%

Voting precincts

43 voting precincts overlap ZIP 15236. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:15236")

ZIP 15236 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.