Boundary Atlas

ZIP code 66865: Olpe, KS

ZIP code 66865 is in Olpe (50% of residents), in Lyon County (100%) and Chase County (0.2%), Kansas. 50% of its residents live outside city limits. It is in Kansas's 2nd congressional district. Its state senate districts are State Senate District 17 (100%) and State Senate District 14 (0.2%); its state house districts are State House District 76 (66%) and State House District 13 (34%).

1,029residents (2020 Census)
149.0 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Kansas

City and county

City or townShare of ZIP residents
Olpe50%

CountyShare of ZIP residents
Lyon County100%
Chase County0.2%

Town or county subdivisionShare of ZIP residents
Center township90%
Elmendaro township9.6%
Matfield township0.2%
Bazaar townshipland only

Congressional district

Congressional districtShare of ZIP residents
Kansas's 2nd congressional district (KS-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (KS-02)Derek Schmidt (R)202-225-6601100%
U.S. SenatorJerry Moran (R)202-224-6521 · contact formstatewide
U.S. SenatorRoger Marshall (R)202-224-4774 · contact formstatewide
State Senator (State Senate District 17)Mike Argabright (R)100%
State Senator (State Senate District 14)Mike Fagg (R)0.2%
State Representative (State House District 76)Brad Barrett (R)66%
State Representative (State House District 13)Duane Droge (R)34%

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 17100%
State Senate District 140.2%

State house districtShare of ZIP residents
State House District 7666%
State House District 1334%

Voting precincts

5 voting precincts overlap ZIP 66865. 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:66865")

ZIP 66865 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.