Boundary Atlas

ZIP code 66088: Valley Falls, KS

ZIP code 66088 is in Valley Falls (47% of residents), in Jefferson County (98%) and Atchison County (1.7%), Kansas. 53% of its residents live outside city limits. It is in Kansas's 1st congressional district (98%) and Kansas's 2nd congressional district (1.7%). Its state senate districts are State Senate District 1 (86%) and State Senate District 18 (14%); its state house districts are State House District 47 (98%) and State House District 63 (1.7%).

2,310residents (2020 Census)
120.0 sq miland area
1cities and towns
2congressional districts
8voting precincts

See it on the mapAll of Kansas

City and county

City or townShare of ZIP residents
Valley Falls47%

CountyShare of ZIP residents
Jefferson County98%
Atchison County1.7%

Town or county subdivisionShare of ZIP residents
Delaware township75%
Jefferson township8.5%
Ozawkie township7.1%
Rock Creek township6.8%
Benton township1.4%
Oskaloosa township0.7%
Kapioma township0.4%
Norton township0.4%

Congressional districts

Congressional districtShare of ZIP residents
Kansas's 1st congressional district (KS-01)98%
Kansas's 2nd congressional district (KS-02)1.7%

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

OfficeMemberContactShare of residents
U.S. Representative (KS-01)Tracey Mann (R)202-225-271598%
U.S. Representative (KS-02)Derek Schmidt (R)202-225-66011.7%
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 1)Craig Bowser (R)86%
State Senator (State Senate District 18)Kenny Titus (R)14%
State Representative (State House District 47)Ronald Ellis (R)98%
State Representative (State House District 63)Allen Reavis (R)1.7%

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 186%
State Senate District 1814%

State house districtShare of ZIP residents
State House District 4798%
State House District 631.7%

Voting precincts

8 voting precincts overlap ZIP 66088. Map them, with each precinct's share of the ZIP's residents.

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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:66088")

ZIP 66088 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.