ZIP code 99176: Whitman County, WA
ZIP code 99176 is in Whitman County, Washington, outside any city or Census-designated place. 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
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Whitman County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Garfield-Oakesdale CCD | 65% |
| Rock Lake CCD | 24% |
| Rosalia CCD | 11% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 5th congressional district (WA-05) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| 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% |
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
- Whitman County website: http://www.whitmancounty.org
- Whitman County laws: search for the Whitman 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
4 voting precincts overlap ZIP 99176. 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:99176")
ZIP 99176 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.