Boundary Atlas

ZIP code 16057: Slippery Rock, PA

ZIP code 16057 is in Slippery Rock (22% of residents), Slippery Rock University (17%) and West Liberty (2.3%), in Butler County (94%), Lawrence County (4.7%) and Mercer County (0.9%), Pennsylvania. 59% of its residents live outside city limits. It is in Pennsylvania's 16th congressional district. Its state senate districts are State Senate District 21 (94%) and State Senate District 50 (5.7%); its state house districts are State House District 17 (74%) and State House District 8 (26%).

14,327residents (2020 Census)
88.7 sq miland area
5cities and towns
1congressional district
12voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
Slippery Rock22%
Slippery Rock University17%
West Liberty2.3%
Harlansburg0.4%
Forestville<0.1%

CountyShare of ZIP residents
Butler County94%
Lawrence County4.7%
Mercer County0.9%

Town or county subdivisionShare of ZIP residents
Slippery Rock township48%
Slippery Rock borough22%
Brady township8.5%
Worth township8.4%
Scott township3.6%
Cherry township2.6%
West Liberty borough2.3%
Mercer township1.8%
Clay township1.7%
Plain Grove township1.1%
Liberty township0.9%

Congressional district

Congressional districtShare of ZIP residents
Pennsylvania's 16th congressional district (PA-16)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (PA-16)Mike Kelly (R)202-225-5406100%
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 21)Scott Hutchinson (R)814-677-634594%
State Senator (State Senate District 50)Michele Brooks (R)724-654-14445.7%
State Representative (State House District 17)Tim Bonner (R)724-458-491174%
State Representative (State House District 8)Aaron Bernstine (R)724-847-529126%

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 2194%
State Senate District 505.7%

State house districtShare of ZIP residents
State House District 1774%
State House District 826%

Voting precincts

12 voting precincts overlap ZIP 16057. Map them, with each precinct's share of the ZIP's residents.

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ZIP 16057 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.