Boundary Atlas

Idaho's 1st congressional district (ID-01)

Idaho's 1st congressional district (ID-01) covers parts or all of 19 counties, including Adams County, Benewah County, Boise County, Bonner County, Boundary County and Canyon County, and 147 ZIP codes (127 wholly inside it). Its 2020 population was 919,553. This is the map in force for the November 3, 2026 election.

919,553residents (2020 Census)
19counties
147ZIP codes
457voting precincts

Who represents ID-01

OfficeMemberContact
U.S. Representative (ID-01)Russ Fulcher (R)202-225-6611
U.S. SenatorJames E. Risch (R)202-224-2752 · contact form
U.S. SenatorMike Crapo (R)202-224-6142 · contact form

Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).

Counties

CountyShare of the county's residents in ID-01
Adams County100%
Benewah County100%
Boise County100%
Bonner County100%
Boundary County100%
Canyon County100%
Clearwater County100%
Gem County100%
Idaho County100%
Kootenai County100%
Latah County100%
Lewis County100%
Nez Perce County100%
Owyhee County100%
Payette County100%
Shoshone County100%
Valley County100%
Washington County100%
Ada County47%

ZIP codes

Percentages mark ZIPs only partly in ID-01: the share of that ZIP's residents inside it.

Towns

Avery-Clarkia CCD, Blanchard-Glengary CCD, Bonners Ferry CCD, Bruneau CCD, Caldwell CCD, Cambridge CCD, Cascade CCD, Clark Fork CCD, Coeur d'Alene CCD, Cottonwood CCD, Council CCD, Craigmont CCD, Deary-Bovill CCD, Duck Valley CCD, Elk City CCD, Elk River CCD, Emmett Bench CCD, Emmett Valley CCD, Fruitland CCD, Garden Valley CCD, Genesee CCD, Grand View CCD, Grangeville CCD, Harrison CCD, Homedale CCD, Horseshoe Bend CCD, Huston CCD, Idaho City CCD, Kamiah CCD, Kellogg CCD, Kuna CCD, Leland CCD, Lewiston CCD, Marsing CCD, McCall CCD, Melba CCD, Middleton CCD, Midvale CCD, Moscow CCD and Moyie Springs CCD and others.

Get this in your AI agent

Your agent can draw every precinct in ID-01, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

get_boundaries(id="us:congressional_district:1601", children_level="precinct", include_districts=True)