Mason County, Washington elections office: address and phone for 2026
The Washington Secretary of State lists the Mason County Elections at 411 N. 5th Street, Shelton, WA 98584, phone 360-427-9670 ext. 470. Washington: Voting period opens Friday, October 16. Washington votes by mail; this office runs the county's voting centers and drop boxes.
Mason County elections office
Mason County Elections
Office: 411 N. 5th Street, Shelton, WA 98584
Mailing address: PO Box 400, Shelton, WA 98584
Phone: 360-427-9670 ext. 470
Regular office hours: Monday to Friday, 9 a.m. to 4 p.m.
Find your voting centers and ballot drop boxes at VoteWA.
Washington voting dates for Mason County voters
| Date | What |
|---|---|
| Fri, Oct 16 | Voting begins and ballots go out Washington votes by mail. Every registered voter is mailed a ballot. source |
| Fri, Oct 16, 8:00 AM | Voting period opens The 18-day voting period starts Oct 16: ballots are mailed and voting centers open. source |
| Mon, Oct 26 | Register online or by mail Online and mail registrations must be received by Oct 26. After that, register in person until 8 p.m. on Election Day. source |
| Tue, Nov 3, 8:00 PM | Election Day: drop boxes close at 8:00 p.m. Washington votes by mail. source |
| Tue, Nov 3, 8:00 PM | Register in person Register in person during business hours and until 8 p.m. on Election Day. source |
| Tue, Nov 3, 8:00 PM | Return your ballot Deposit your ballot in an official drop box by 8 p.m. on Election Day. source |
Mason County voting questions
What is the phone number for the Mason County elections office?
360-427-9670 ext. 470, the Elections (Mason County's elections office on the Washington Secretary of State, County Elections Offices list).
What is the address of the Mason County elections office?
411 N. 5th Street, Shelton, WA 98584. Mailing address: PO Box 400, Shelton, WA 98584.
When does early voting start in Mason County?
Voting period opens Friday, October 16, 2026. The 18-day voting period starts Oct 16: ballots are mailed and voting centers open.
More for Washington voters
- Who is on the Washington ballot: every candidate on the state's official list, race by race.
- Washington voting deadlines 2026: registration, mail ballots, early voting and Election Day.
- Every Washington county's office.
- Early voting dates in every state.
Other Washington counties: Adams, Asotin, Benton, Chelan, Clallam, Clark, Columbia, Cowlitz, Douglas, Ferry, Franklin, Garfield, Grant, Grays Harbor, Island, Jefferson, King, Kitsap, Kittitas, Klickitat, Lewis, Lincoln, Okanogan, Pacific, Pend Oreille, Pierce, San Juan, Skagit, Skamania, Snohomish, Spokane, Stevens, Thurston, Wahkiakum, Walla Walla, Whatcom, Whitman, Yakima.
Office details are from the Washington Secretary of State, County Elections Offices (checked October 14, 2026). Dates are Washington's, each linked to its source. Call the office before you go.