ZIP code 66955: Mahaska, KS
ZIP code 66955 is in Mahaska (43% of residents), in Washington County (82%) and Thayer County (18%), Kansas. 57% of its residents live outside city limits. It is in Kansas's 1st congressional district (82%) and Nebraska's 3rd congressional district (18%). Its state senate districts are State Senate District 36 (82%) and State Senate District 32 (18%); its state house district is State House District 106.
See it on the mapAll of Kansas
City and county
| City or town | Share of ZIP residents |
|---|---|
| Mahaska | 43% |
| County | Share of ZIP residents |
|---|---|
| Washington County | 82% |
| Thayer County | 18% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Union township | 60% |
| Lowe township | 22% |
| Chester precinct | 18% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Kansas's 1st congressional district (KS-01) | 82% |
| Nebraska's 3rd congressional district (NE-03) | 18% |
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-01) | Tracey Mann (R) | 202-225-2715 | 82% |
| U.S. Representative (NE-03) | Adrian Smith (R) | 202-225-6435 | 18% |
| 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 36) | Elaine Bowers (R) | 82% | |
| State Senator (State Senate District 32) | Tom Brandt (Nonpartisan) | 18% | |
| State Representative (State House District 106) | Lisa Moser (R) | 82% |
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
- Mahaska laws: search for the Mahaska, Kansas code of ordinances
- Washington County website: http://WashingtonCountyKS.net
- Washington County laws: search for the Washington County, Kansas code of ordinances
- Thayer County laws: search for the Thayer County, Kansas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 36 | 82% |
| State Senate District 32 | 18% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 106 | 82% |
Voting precincts
3 voting precincts overlap ZIP 66955. It also crosses into NE. 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:66955")
ZIP 66955 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.