ZIP code 99354: Richland, WA
ZIP code 99354 is in Richland, in Benton County, Washington. It is in Washington's 4th congressional district. Its state senate district is Legislative (Senate) District 16; its state house district is Legislative (House) District 16.
See it on the mapAll of Washington
City and county
| City or town | Share of ZIP residents |
|---|---|
| Richland | 100% |
| County | Share of ZIP residents |
|---|---|
| Benton County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Richland-Kennewick CCD | 100% |
| Hanford Site CCD | land only |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 4th congressional district (WA-04) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Theresa Richardson | 100% | |
| 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 16) | Perry Dozier (R) | 100% | |
| State Representative (Legislative (House) District 16) | Mark Klicker (R) | 100% | |
| State Representative (Legislative (House) District 16) | Skyler Rude (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
- Richland laws: search for the Richland, Washington code of ordinances
- 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 16 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Legislative (House) District 16 | 100% |
Voting precincts
32 voting precincts overlap ZIP 99354. 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:99354")
ZIP 99354 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.