ZIP code 99346: Benton County, WA
ZIP code 99346 is in Benton County, Washington, outside any city or Census-designated place. It is in Washington's 4th congressional district. Its state senate districts are Legislative (Senate) District 14 (95%) and Legislative (Senate) District 8 (4.9%); its state house districts are Legislative (House) District 14 (95%) and Legislative (House) District 8 (4.9%).
See it on the mapAll of Washington
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Benton County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| South Benton CCD | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 4th congressional district (WA-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (WA-04) | Dan Newhouse (R) | 202-225-5816 | 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 14) | Curtis King (R) | 95% | |
| State Senator (Legislative (Senate) District 8) | Matt Boehnke (R) | 4.9% | |
| State Representative (Legislative (House) District 14) | Deb Manjarrez (R) | 95% | |
| State Representative (Legislative (House) District 14) | Gloria Mendoza (R) | 95% | |
| State Representative (Legislative (House) District 8) | April Connors (R) | 4.9% | |
| State Representative (Legislative (House) District 8) | Stephanie Barnard (R) | 4.9% |
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
- Benton County website: https://www.co.benton.wa.us/
- Benton County laws: search for the Benton County, Washington code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Legislative (Senate) District 14 | 95% |
| Legislative (Senate) District 8 | 4.9% |
| State house district | Share of ZIP residents |
|---|---|
| Legislative (House) District 14 | 95% |
| Legislative (House) District 8 | 4.9% |
Voting precincts
4 voting precincts overlap ZIP 99346. 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:99346")
ZIP 99346 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.