Columbia County Courthouse

341 E. Main St.
Dayton, WA 99328- Map It
Phone: (509) 382-4542

AAA Editor Notes

Columbia County Courthouse is at 341 E. Main St. This restored 1887 Italianate courthouse is reported to be the oldest working courthouse in the state. Exhibits include historical photographs and maps. A 22-foot lantern caps the building.
Hours: Mon.-Fri. 8:30-4:30.