Newcastle, Oklahoma
Newcastle is a city in McClain County, Oklahoma, with 10,984 residents in 2020. It is in Oklahoma's 4th congressional district. Its state senate district is State Senate District 43; its state house district is State House District 20.
County
| County | Share of residents |
|---|---|
| McClain County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Oklahoma's 4th congressional district (OK-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (OK-04) | Tom Cole (R) | 202-225-6165 | 100% |
| U.S. Senator | Alan Armstrong (R) | 202-224-4721 | statewide |
| U.S. Senator | James Lankford (R) | 202-224-5754 · contact form | statewide |
| State Senator (State Senate District 43) | Kendal Sacchieri (R) | 100% | |
| State Representative (State House District 20) | Jonathan Wilk (R) | 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
- Newcastle laws: search for the Newcastle, Oklahoma code of ordinances
- McClain County website: https://mcclain-co-ok.us/
- McClain County laws: search for the McClain County, Oklahoma code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 43 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 20 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Newcastle: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Newcastle'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:4051150")
Newcastle 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.