New Castle, Pennsylvania
New Castle is a city in Lawrence County, Pennsylvania, with 21,926 residents in 2020. It is in Pennsylvania's 16th congressional district. Its state senate district is State Senate District 50; its state house district is State House District 9.
County
| County | Share of residents |
|---|---|
| Lawrence County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Pennsylvania's 16th congressional district (PA-16) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (PA-16) | Mike Kelly (R) | 202-225-5406 | 100% |
| U.S. Senator | David McCormick (R) | 202-224-6324 · contact form | statewide |
| U.S. Senator | John Fetterman (D) | 202-224-4254 · contact form | statewide |
| State Senator (State Senate District 50) | Michele Brooks (R) | 724-654-1444 | 100% |
| State Representative (State House District 9) | Marla Brown (R) | 724-498-4397 | 100% |
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
- New Castle website: https://www.newcastlepa.org/
- New Castle laws: search for the New Castle, Pennsylvania code of ordinances
- Lawrence County website: http://www.co.lawrence.pa.us
- Lawrence County laws: search for the Lawrence County, Pennsylvania code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 50 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 9 | 100% |
ZIP codes
Percentages mark ZIPs only partly in New Castle: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get New Castle's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:4253368")
New Castle here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.