Boundary Atlas

ZIP code 16101: New Castle, PA

ZIP code 16101 is in New Castle (47% of residents), Oakwood (6.9%) and Oakland (5.0%), in Lawrence County, Pennsylvania. 41% of its residents live outside city limits. It is in Pennsylvania's 16th congressional district. Its state senate districts are State Senate District 50 (99%) and State Senate District 47 (1.1%); its state house districts are State House District 9 (89%) and State House District 8 (11%).

31,960residents (2020 Census)
69.2 sq miland area
4cities and towns
1congressional district
32voting precincts

See it on the mapAll of Pennsylvania

City and county

City or townShare of ZIP residents
New Castle47%
Oakwood6.9%
Oakland5.0%
Harlansburg0.3%

CountyShare of ZIP residents
Lawrence County100%

Town or county subdivisionShare of ZIP residents
New Castle city47%
Shenango township21%
Union township15%
Slippery Rock township5.4%
Scott township5.0%
Hickory township5.0%
Wayne township1.1%
Taylor township0.5%
Mahoning township<0.1%

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 50)Michele Brooks (R)724-654-144499%
State Senator (State Senate District 47)Elder Vogel (R)878-978-25751.1%
State Representative (State House District 9)Marla Brown (R)724-498-439789%
State Representative (State House District 8)Aaron Bernstine (R)724-847-529111%

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 5099%
State Senate District 471.1%

State house districtShare of ZIP residents
State House District 989%
State House District 811%

Voting precincts

32 voting precincts overlap ZIP 16101. 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:16101")

ZIP 16101 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.