ZIP code 99133: Grand Coulee, WA
ZIP code 99133 is in Grand Coulee (66% of residents), in Grant County (74%), Lincoln County (19%) and Douglas County (7.6%), Washington. 34% of its residents live outside city limits. It is in Washington's 4th congressional district (81%) and Washington's 5th congressional district (19%). Its state senate districts are Legislative (Senate) District 13 (74%), Legislative (Senate) District 9 (19%) and Legislative (Senate) District 7 (7.6%); its state house districts are Legislative (House) District 13 (74%), Legislative (House) District 9 (19%) and Legislative (House) District 7 (7.6%).
See it on the mapAll of Washington
City and county
| City or town | Share of ZIP residents |
|---|---|
| Grand Coulee | 66% |
| Electric City | 0.5% |
| County | Share of ZIP residents |
|---|---|
| Grant County | 74% |
| Lincoln County | 19% |
| Douglas County | 7.6% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Grand Coulee CCD | 74% |
| Wilbur CCD | 19% |
| Bridgeport CCD | 7.6% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 4th congressional district (WA-04) | 81% |
| Washington's 5th congressional district (WA-05) | 19% |
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-04) | Dan Newhouse (R) | 202-225-5816 | 81% |
| U.S. Representative (WA-05) | Michael Baumgartner (R) | 202-225-2006 | 19% |
| 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 13) | Judy Warnick (R) | 74% | |
| State Senator (Legislative (Senate) District 9) | Mark Schoesler (R) | 19% | |
| State Senator (Legislative (Senate) District 7) | Shelly Short (R) | 7.6% | |
| State Representative (Legislative (House) District 13) | Alex Ybarra (R) | 74% | |
| State Representative (Legislative (House) District 13) | Tom Dent (R) | 74% | |
| State Representative (Legislative (House) District 9) | Joe Schmick (R) | 19% | |
| State Representative (Legislative (House) District 9) | Mary Dye (R) | 19% | |
| State Representative (Legislative (House) District 7) | Andrew Engell (R) | 7.6% | |
| State Representative (Legislative (House) District 7) | Hunter Abell (R) | 7.6% |
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
- Grand Coulee laws: search for the Grand Coulee, Washington code of ordinances
- Grant County laws: search for the Grant County, Washington code of ordinances
- Lincoln County website: http://www.co.lincoln.wa.us
- Lincoln County laws: search for the Lincoln County, Washington code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Legislative (Senate) District 13 | 74% |
| Legislative (Senate) District 9 | 19% |
| Legislative (Senate) District 7 | 7.6% |
| State house district | Share of ZIP residents |
|---|---|
| Legislative (House) District 13 | 74% |
| Legislative (House) District 9 | 19% |
| Legislative (House) District 7 | 7.6% |
Voting precincts
5 voting precincts overlap ZIP 99133. 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:99133")
ZIP 99133 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.