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Columbia County District Court

Filing information for Columbia County District Court in Dayton, WA. Part of the Columbia County small claims court system.

E-FILE!

E-Filing

✓ Available

Max Claim

$10,000

Courthouse Details

Columbia County District Court

341 E Main Street Suite 4

Dayton, WA 99328

Mailing Address

341 E Main Street Suite 4

Dayton, WA 99328

Phone: (509) 382-4812Fax: (509) 382-2490Email: court@co.columbia.wa.us

Hours: Monday through Friday, 8:30 a.m. to 4:30 p.m.

Area Served

Columbia County

How to File at Columbia County District Court

E-filing available

This court accepts electronic filing for small claims cases.

Note: Electronic filing is available and encouraged through the statewide eFileWA system, though not required for non-attorneys. Filing hours for e-filed documents are Monday through Friday, 8:30 a.m. to 4:30 p.m. PST, excluding court holidays. Documents filed outside these hours are considered received the next business day. A convenience fee applies for electronic payments. Certain documents, such as original wills, certified records for appeal, and new cases with fee waiver requests or immediate relief requests, cannot be e-filed.

File in person

Bring your completed forms to the courthouse during business hours.

File by mail

Most small claims courts accept filing by mail — check with this court first. Typically you mail your completed forms with the filing fee plus a self-addressed stamped envelope for your returned copies.

Ready to get your money back?

A demand letter often settles disputes before a case is ever filed — and it only takes a few minutes.

Read the demand letter guide

For statewide rules, see the full Washington small claims court guide →

Data verified May 6, 2026.