ZIP code 98188: SeaTac, WA
ZIP code 98188 is in SeaTac (69% of residents) and Tukwila (31%), in King County, Washington. It is in Washington's 9th congressional district. Its state senate districts are Legislative (Senate) District 33 (69%) and Legislative (Senate) District 11 (31%); its state house districts are Legislative (House) District 33 (69%) and Legislative (House) District 11 (31%).
See it on the mapAll of Washington
City and county
| City or town | Share of ZIP residents |
|---|---|
| SeaTac | 69% |
| Tukwila | 31% |
| County | Share of ZIP residents |
|---|---|
| King County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Seattle CCD | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 9th congressional district (WA-09) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Mohamed Egal | 69% | |
| Mayor | Thomas McLeod | 31% | |
| U.S. Representative (WA-09) | Adam Smith (D) | 202-225-8901 | 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 33) | Tina Orwall (Democratic) | 69% | |
| State Senator (Legislative (Senate) District 11) | Bob Hasegawa (Democratic) | 31% | |
| State Representative (Legislative (House) District 33) | Edwin Obras (Democratic) | 69% | |
| State Representative (Legislative (House) District 33) | Mia Gregerson (Democratic) | 69% | |
| State Representative (Legislative (House) District 11) | David Hackney (Democratic) | 31% | |
| State Representative (Legislative (House) District 11) | Steve Bergquist (Democratic) | 31% |
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
- SeaTac website: https://www.seatacwa.gov/
- SeaTac laws: search for the SeaTac, Washington code of ordinances
- Tukwila website: https://tukwilawa.gov
- Tukwila laws: search for the Tukwila, Washington code of ordinances
- King County website: https://kingcounty.gov
- King County laws: search for the King County, Washington code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Legislative (Senate) District 33 | 69% |
| Legislative (Senate) District 11 | 31% |
| State house district | Share of ZIP residents |
|---|---|
| Legislative (House) District 33 | 69% |
| Legislative (House) District 11 | 31% |
Voting precincts
31 voting precincts overlap ZIP 98188. 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:98188")
ZIP 98188 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.