Boundary Atlas

Caldwell, Idaho

Caldwell is a city in Canyon County, Idaho, with 60,512 residents in 2020. It is in Idaho's 1st congressional district. It spans 4 state senate and 4 state house districts.

60,512residents (2020 Census)
25.4 sq miland area
4ZIP codes
1congressional district

County

CountyShare of residents
Canyon County100%

Congressional district

Congressional districtShare of 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)208-484-318383%
State Senator (State Senate District 10)Tammy Nichols (R)8.9%
State Senator (State Senate District 12)Ben Adams (R)208-546-93937.1%
State Senator (State Senate District 9)Brandon Shippy (R)208-332-13250.5%
State Representative (State House District 11)Kent Marmon (R)83%
State Representative (State House District 11)Lucas Cayler (R)208-800-257983%
State Representative (State House District 10)Bruce Skaug (R)208-332-11788.9%
State Representative (State House District 10)Mike Moyle (R)208-286-78428.9%
State Representative (State House District 12)Jaron Crane (R)7.1%
State Representative (State House District 12)Jeff Cornilles (R)208-880-35627.1%
State Representative (State House District 9)John Shirts (R)0.5%
State Representative (State House District 9)Judy Boyle (R)0.5%

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 residents
State Senate District 1183%
State Senate District 108.9%
State Senate District 127.1%
State Senate District 90.5%

State house districtShare of residents
State House District 1183%
State House District 108.9%
State House District 127.1%
State House District 90.5%

ZIP codes

Percentages mark ZIPs only partly in Caldwell: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Caldwell's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:1612250")

Caldwell here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.