• Introduction
• Where to Return Your Vote-by-Mail Ballot
  • Drop it in the mail at any USPS collection box
  • Deposit it at an Official Ballot Drop Box
  • At A Vote Center
• Where to Vote in Person

Introduction

This page provides information about Official Ballot Drop Boxes and Vote Centers in Sonoma County for the November 4, 2025, Statewide Special Election. There are two main ways to vote in this election:

• Vote the ballot you receive in the mail. Per California law, every active, registered voter is automatically mailed a ballot approximately 3-4 weeks before Election Day. See Where to Return Your Vote-by-Mail Ballot.
• Vote in person at a Vote Center. See Where to Vote in Person.

If neither of these options works for you, call us at (707) 565-6800 or email us at rov-info@sonomacounty.gov to find out about alternate voting options.

Where to Return Your Vote-by-Mail Ballot

Drop it in the mail

In order to count, it must be postmarked on or before November 4 (Election Day), and received in our office by November 12.

Important: The United States Postal Service (USPS) can no longer guarantee all mail will receive a postmark on the day they receive it. Therefore, we strongly recommend that you avoid mailing your ballot on Election Day because it may not be counted!

Deposit it at an Official Ballot Drop Box

There will be 22 Official Ballot Drop Boxes available throughout the County. They will be open 24/7 from October 7 until November 4 (Election Day) at 8:00 p.m.  See the complete list of Official Ballot Drop Boxes below. They are sorted in alphabetical order by city/place. Or click here to view these locations on an interactive map.

Take it to a Vote Center

Click here for a list of locations.

Where to Vote in Person

There will be 14 Vote Centers available for in-person voting throughout the County for this election. All Vote Centers will be open November 4 (Election Day) from 7 a.m. to 8 p.m.

In addition:

• Seven Vote Centers will be open daily from October 25 to November 3, 9 a.m. to 5 p.m. (including Saturdays and Sundays)
• Seven more Vote Centers will be open daily from November 1 to November 3, 9 a.m. to 5 p.m. (including Saturday and Sunday)

To learn how Vote Centers differ from traditional polling places, visit our Voter's Choice Act page (in short, they give voters much more flexibility for where, when, and how to vote).

Official Vote Center locations for the November 4, 2025, Statewide Special Election, are sorted in alphabetical order by city/place. You can also click here to view these locations on an interactive map.