ZIP code 66860: Madison, KS
ZIP code 66860 is in Madison (56% of residents), in Greenwood County (90%) and Lyon County (9.8%), Kansas. 44% of its residents live outside city limits. It is in Kansas's 4th congressional district (90%) and Kansas's 2nd congressional district (9.8%). Its state senate districts are State Senate District 14 (90%) and State Senate District 17 (9.8%); its state house districts are State House District 13 (95%) and State House District 76 (5.1%).
See it on the mapAll of Kansas
City and county
| City or town | Share of ZIP residents |
|---|---|
| Madison | 56% |
| County | Share of ZIP residents |
|---|---|
| Greenwood County | 90% |
| Lyon County | 9.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Madison township | 81% |
| Shell Rock township | 7.1% |
| Center township | 6.2% |
| Elmendaro township | 3.6% |
| Janesville township | 1.6% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Kansas's 4th congressional district (KS-04) | 90% |
| Kansas's 2nd congressional district (KS-02) | 9.8% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (KS-04) | Ron Estes (R) | 202-225-6216 | 90% |
| U.S. Representative (KS-02) | Derek Schmidt (R) | 202-225-6601 | 9.8% |
| U.S. Senator | Jerry Moran (R) | 202-224-6521 · contact form | statewide |
| U.S. Senator | Roger Marshall (R) | 202-224-4774 · contact form | statewide |
| State Senator (State Senate District 14) | Mike Fagg (R) | 90% | |
| State Senator (State Senate District 17) | Mike Argabright (R) | 9.8% | |
| State Representative (State House District 13) | Duane Droge (R) | 95% | |
| State Representative (State House District 76) | Brad Barrett (R) | 5.1% |
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
- Madison website: http://www.madisonkschamber.org/
- Madison laws: search for the Madison, Kansas code of ordinances
- Greenwood County website: http://GreenwoodCounty.org
- Greenwood County laws: search for the Greenwood County, Kansas code of ordinances
- Lyon County website: https://LyonCounty.org
- Lyon County laws: search for the Lyon County, Kansas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 14 | 90% |
| State Senate District 17 | 9.8% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 13 | 95% |
| State House District 76 | 5.1% |
Voting precincts
6 voting precincts overlap ZIP 66860. 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:66860")
ZIP 66860 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.