Boundary Atlas

ZIP code 83605: Caldwell, ID

ZIP code 83605 is in Caldwell (96% of residents), in Canyon County, Idaho. It is in Idaho's 1st congressional district. Its state senate districts are State Senate District 11 (96%), State Senate District 10 (4.1%) and State Senate District 9 (<0.1%); its state house districts are State House District 11 (96%), State House District 10 (4.1%) and State House District 9 (<0.1%).

38,561residents (2020 Census)
24.6 sq miland area
1cities and towns
1congressional district
13voting precincts

See it on the mapAll of Idaho

City and county

City or townShare of ZIP residents
Caldwell96%

CountyShare of ZIP residents
Canyon County100%

Town or county subdivisionShare of ZIP residents
Caldwell CCD81%
Nampa CCD19%

Congressional district

Congressional districtShare of ZIP residents
Idaho's 1st congressional district (ID-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (ID-01)Russ Fulcher (R)202-225-6611100%
U.S. SenatorJames E. Risch (R)202-224-2752 · contact formstatewide
U.S. SenatorMike Crapo (R)202-224-6142 · contact formstatewide
State Senator (State Senate District 11)Camille Blaylock (R)208-484-318396%
State Senator (State Senate District 10)Tammy Nichols (R)4.1%
State Senator (State Senate District 9)Brandon Shippy (R)208-332-1325<0.1%
State Representative (State House District 11)Kent Marmon (R)96%
State Representative (State House District 11)Lucas Cayler (R)208-800-257996%
State Representative (State House District 10)Bruce Skaug (R)208-332-11784.1%
State Representative (State House District 10)Mike Moyle (R)208-286-78424.1%
State Representative (State House District 9)John Shirts (R)<0.1%
State Representative (State House District 9)Judy Boyle (R)<0.1%

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1196%
State Senate District 104.1%
State Senate District 9<0.1%

State house districtShare of ZIP residents
State House District 1196%
State House District 104.1%
State House District 9<0.1%

Voting precincts

13 voting precincts overlap ZIP 83605. Map them, with each precinct's share of the ZIP's residents.

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ZIP 83605 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.