🗳️ Register to Vote

Register to Vote in Washington County, MO

Here's what to expect at the County Clerk — fees, what to bring, and where to go.

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What Missouri requires

Verified 2026-07-09 · official state sources

Your voter registration must be postmarked or submitted by the 4th Wednesday before an election — about four weeks out. source ↗
Missouri offers full online voter registration — you can submit your application electronically, or register by mail or in person. source ↗
To vote in person you must show a nonexpired Missouri driver or nondriver license, a U.S. passport, or a military or veteran ID. A registered voter without one may cast a provisional ballot, which counts if they return with a photo ID or their signature is verified. source ↗

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Online registration available

📋Office Information

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Office Address

Potosi, Missouri

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Official Website

Call or check the county website for the County Clerk's office address and hours.

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Based on available public records

This page shows the best information we have for Washington County. Fees and hours may vary — call ahead to confirm before visiting.

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