Boundary Atlas

Oregon's 1st congressional district (OR-01)

Oregon's 1st congressional district (OR-01) covers parts or all of Clatsop County, Columbia County, Tillamook County, Washington County and Multnomah County, and 67 ZIP codes (51 wholly inside it). Its 2020 population was 706,209. This is the map in force for the November 3, 2026 election.

706,209residents (2020 Census)
5counties
67ZIP codes
185voting precincts

Who represents OR-01

OfficeMemberContact
U.S. Representative (OR-01)Suzanne Bonamici (D)202-225-0855
U.S. SenatorJeff Merkley (D)202-224-3753 · contact form
U.S. SenatorRon Wyden (D)202-224-5244 · 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 OR-01
Clatsop County100%
Columbia County100%
Tillamook County100%
Washington County70%
Multnomah County20%

ZIP codes

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

Towns

Astoria CCD, Bay City CCD, Beaver CCD, Chehalem Mountains CCD, Clatskanie CCD, Coast Range CCD, Forest Grove-Cornelius CCD, Goble CCD, Jewell CCD, Knappa-Brownsmead CCD, Nehalem CCD, Neskowin CCD, North Plains CCD, Rainier CCD, Rockcreek CCD, Scappoose CCD, Seaside CCD, Skyline CCD, St. Helens CCD, Tillamook CCD, Vernonia CCD, Portland West CCD, Beaverton-Hillsboro CCD and Portland East CCD.

Get this in your AI agent

Your agent can draw every precinct in OR-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:4101", children_level="precinct", include_districts=True)