Duncan, Oklahoma
Duncan is a city in Stephens County, Oklahoma, with 22,692 residents in 2020. It is in Oklahoma's 4th congressional district. It spans 2 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| Stephens 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) | 63% | |
| State Senator (State Senate District 31) | Spencer Kern (R) | 37% | |
| State Representative (State House District 50) | Stacy Adams (R) | 97% | |
| State Representative (State House District 51) | Brad Boles (R) | 3.2% |
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
- Duncan website: http://www.cityofduncan.com
- Duncan laws: search for the Duncan, Oklahoma code of ordinances
- Stephens County laws: search for the Stephens County, Oklahoma code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 43 | 63% |
| State Senate District 31 | 37% |
| State house district | Share of residents |
|---|---|
| State House District 50 | 97% |
| State House District 51 | 3.2% |
ZIP codes
Percentages mark ZIPs only partly in Duncan: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Duncan'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:4021900")
Duncan 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.