Boundary Atlas

Cornelius, Oregon

Cornelius is a city in Washington County, Oregon, with 12,694 residents in 2020. It is in Oregon's 1st congressional district. Its state senate district is State Senate District 15; its state house district is State House District 29.

12,694residents (2020 Census)
2.3 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Washington County100%

Congressional district

Congressional districtShare of residents
Oregon's 1st congressional district (OR-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (OR-01)Suzanne Bonamici (D)202-225-0855100%
U.S. SenatorJeff Merkley (D)202-224-3753 · contact formstatewide
U.S. SenatorRon Wyden (D)202-224-5244 · contact formstatewide
State Senator (State Senate District 15)Janeen Sollman (Democratic)100%
State Representative (State House District 29)Susan McLain (Democratic)100%

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 15100%

State house districtShare of residents
State House District 29100%

ZIP codes

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

Get this in your AI agent

Your agent can get Cornelius'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:4115550")

Cornelius 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.