ZIP code 98579: Rochester, WA
ZIP code 98579 is in Rochester (44% of residents) and Grand Mound (16%), in Thurston County (96%), Lewis County (3.9%) and Grays Harbor County (0.1%), Washington. 39% of its residents live outside city limits. It is in Washington's 3rd congressional district (79%), Washington's 10th congressional district (21%) and Washington's 6th congressional district (0.1%). Its state senate districts are Legislative (Senate) District 35 (63%), Legislative (Senate) District 19 (32%) and Legislative (Senate) District 20 (5.1%); its state house districts are Legislative (House) District 35 (63%), Legislative (House) District 19 (32%) and Legislative (House) District 20 (5.1%).
See it on the mapAll of Washington
City and county
| City or town | Share of ZIP residents |
|---|---|
| Rochester | 44% |
| Grand Mound | 16% |
| County | Share of ZIP residents |
|---|---|
| Thurston County | 96% |
| Lewis County | 3.9% |
| Grays Harbor County | 0.1% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Thurston South CCD | 96% |
| Bunker CCD | 3.9% |
| Oakville CCD | 0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 3rd congressional district (WA-03) | 79% |
| Washington's 10th congressional district (WA-10) | 21% |
| Washington's 6th congressional district (WA-06) | 0.1% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (WA-03) | Marie Gluesenkamp Perez (D) | 202-225-3536 | 79% |
| U.S. Representative (WA-10) | Marilyn Strickland (D) | 202-225-9740 | 21% |
| U.S. Representative (WA-06) | Emily Randall (D) | 202-225-5916 | 0.1% |
| 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 35) | Drew MacEwen (R) | 63% | |
| State Senator (Legislative (Senate) District 19) | Jeff Wilson (R) | 32% | |
| State Senator (Legislative (Senate) District 20) | John Braun (R) | 5.1% | |
| State Representative (Legislative (House) District 35) | Dan Griffey (R) | 63% | |
| State Representative (Legislative (House) District 35) | Travis Couture (R) | 63% | |
| State Representative (Legislative (House) District 19) | Jim Walsh (R) | 32% | |
| State Representative (Legislative (House) District 19) | Joel McEntire (R) | 32% | |
| State Representative (Legislative (House) District 20) | Ed Orcutt (R) | 5.1% | |
| State Representative (Legislative (House) District 20) | Peter Abbarno (R) | 5.1% |
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
- Rochester laws: search for the Rochester, Washington code of ordinances
- Grand Mound laws: search for the Grand Mound, Washington code of ordinances
- Thurston County website: https://thurstoncountywa.gov
- Thurston County laws: search for the Thurston County, Washington code of ordinances
- Lewis County laws: search for the Lewis County, Washington code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Legislative (Senate) District 35 | 63% |
| Legislative (Senate) District 19 | 32% |
| Legislative (Senate) District 20 | 5.1% |
| State house district | Share of ZIP residents |
|---|---|
| Legislative (House) District 35 | 63% |
| Legislative (House) District 19 | 32% |
| Legislative (House) District 20 | 5.1% |
Voting precincts
21 voting precincts overlap ZIP 98579. 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:98579")
ZIP 98579 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.