ZIP code 99403: Clarkston Heights-Vineland, WA
ZIP code 99403 is in Clarkston Heights-Vineland (36% of residents), Clarkston (35%) and West Clarkston-Highland (27%), in Asotin County (100%) and Garfield County (0.2%), Washington. It is in Washington's 5th congressional district. Its state senate district is Legislative (Senate) District 9; its state house district is Legislative (House) District 9.
See it on the mapAll of Washington
City and county
| City or town | Share of ZIP residents |
|---|---|
| Clarkston Heights-Vineland | 36% |
| Clarkston | 35% |
| West Clarkston-Highland | 27% |
| County | Share of ZIP residents |
|---|---|
| Asotin County | 100% |
| Garfield County | 0.2% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Clarkston CCD | 88% |
| Asotin CCD | 11% |
| Snake River CCD | 0.2% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 5th congressional district (WA-05) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Monika Lawrence | 35% | |
| U.S. Representative (WA-05) | Michael Baumgartner (R) | 202-225-2006 | 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 9) | Mark Schoesler (R) | 100% | |
| State Representative (Legislative (House) District 9) | Joe Schmick (R) | 100% | |
| State Representative (Legislative (House) District 9) | Mary Dye (R) | 100% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- Clarkston Heights-Vineland laws: search for the Clarkston Heights-Vineland, Washington code of ordinances
- Clarkston website: http://www.clarkston-wa.com/
- Clarkston laws: search for the Clarkston, Washington code of ordinances
- West Clarkston-Highland laws: search for the West Clarkston-Highland, Washington code of ordinances
- Asotin County website: http://www.co.asotin.wa.us
- Asotin County laws: search for the Asotin County, Washington code of ordinances
- Garfield County website: https://www.co.garfield.wa.us/
- Garfield County laws: search for the Garfield County, Washington code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Legislative (Senate) District 9 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Legislative (House) District 9 | 100% |
Voting precincts
24 voting precincts overlap ZIP 99403. Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:99403")
ZIP 99403 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.