ZIP code 66604: Topeka, KS
ZIP code 66604 is in Topeka, in Shawnee County, Kansas. It is in Kansas's 2nd congressional district. Its state senate districts are State Senate District 19 (51%), State Senate District 20 (44%) and State Senate District 18 (5.7%); its state house districts are State House District 55 (56%), State House District 53 (38%), State House District 58 (4.5%) and State House District 56 (0.9%).
See it on the mapAll of Kansas
City and county
| City or town | Share of ZIP residents |
|---|---|
| Topeka | 100% |
| County | Share of ZIP residents |
|---|---|
| Shawnee County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Topeka city | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Kansas's 2nd congressional district (KS-02) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Spencer L. Duncan | 100% | |
| U.S. Representative (KS-02) | Derek Schmidt (R) | 202-225-6601 | 100% |
| 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 19) | Patrick Schmidt (Democratic) | 51% | |
| State Senator (State Senate District 20) | Brenda Dietrich (R) | 44% | |
| State Senator (State Senate District 18) | Kenny Titus (R) | 5.7% | |
| State Representative (State House District 55) | Tobias Schlingensiepen (Democratic) | 56% | |
| State Representative (State House District 53) | Kirk Haskins (Democratic) | 38% | |
| State Representative (State House District 58) | Alexis Simmons (Democratic) | 4.5% | |
| State Representative (State House District 56) | Virgil Weigel (Democratic) | 0.9% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- Topeka website: http://www.topeka.org/
- Topeka laws: search for the Topeka, Kansas code of ordinances
- Shawnee County website: http://www.snco.us
- Shawnee County laws: search for the Shawnee County, Kansas code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 19 | 51% |
| State Senate District 20 | 44% |
| State Senate District 18 | 5.7% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 55 | 56% |
| State House District 53 | 38% |
| State House District 58 | 4.5% |
| State House District 56 | 0.9% |
Voting precincts
39 voting precincts overlap ZIP 66604. 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:66604")
ZIP 66604 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.