Onalaska, Washington
Onalaska is a Census-designated place (an unincorporated community) in Lewis County, Washington, with 657 residents in 2020. It is in Washington's 3rd congressional district. Its state senate district is Legislative (Senate) District 20; its state house district is Legislative (House) District 20.
County
| County | Share of residents |
|---|---|
| Lewis County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Washington's 3rd congressional district (WA-03) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (WA-03) | Marie Gluesenkamp Perez (D) | 202-225-3536 | 100% |
| U.S. Senator | Maria Cantwell (D) | 202-224-3441 · contact form | statewide |
| U.S. Senator | Patty Murray (D) | 202-224-2621 · contact form | statewide |
| State Senator (Legislative (Senate) District 20) | John Braun (R) | 100% | |
| State Representative (Legislative (House) District 20) | Ed Orcutt (R) | 100% | |
| State Representative (Legislative (House) District 20) | Peter Abbarno (R) | 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
- Onalaska laws: search for the Onalaska, Washington code of ordinances
- Lewis County laws: search for the Lewis County, Washington code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| Legislative (Senate) District 20 | 100% |
| State house district | Share of residents |
|---|---|
| Legislative (House) District 20 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Onalaska: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Onalaska'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:5351410")
Onalaska here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.