Boundary Atlas

ZIP code 66041: Lancaster, KS

ZIP code 66041 is in Lancaster (38% of residents) and Huron (11%), in Atchison County (96%), Doniphan County (2.3%) and Brown County (1.2%), Kansas. 50% of its residents live outside city limits. It is in Kansas's 2nd congressional district. Its state senate district is State Senate District 1; its state house districts are State House District 63 (99%) and State House District 62 (1.2%).

644residents (2020 Census)
53.6 sq miland area
2cities and towns
1congressional district
5voting precincts

See it on the mapAll of Kansas

City and county

City or townShare of ZIP residents
Lancaster38%
Huron11%

CountyShare of ZIP residents
Atchison County96%
Doniphan County2.3%
Brown County1.2%

Town or county subdivisionShare of ZIP residents
Lancaster township86%
Center township10%
Union township2.3%
Washington township1.2%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1100%

State house districtShare of ZIP residents
State House District 6399%
State House District 621.2%

Voting precincts

5 voting precincts overlap ZIP 66041. 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:66041")

ZIP 66041 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.