Columbia County Local Governments
Note: This list contains known special districts. Information is from multiple sources. Jurisdictions are encouraged to assist in updating this page by contacting MRSC.
- Land Area 868.8 Sq. Mi.
Cities
- Dayton
- Starbuck
Special Purpose Governments
Conservation District - Columbia Conservation District (all lands in Columbia county including city of Dayton and Starbuck)
Fire Districts
- Columbia County Fire District No. 1 (125 Sq. mi., provides services to Starbuck)
- Walla Walla and Columbia County Joint Fire District No. 2 (Waitsburg)
- Columbia County Fire District No. 3, Dayton (275 sq mi.)
Flood District - Waitsburg Coppi Flood Control District (Portions of Touchet River and Coppei Creek in Columbia and Walla Walla Counties)
Health District - Columbia County Public Health District
Hospital District - Columbia County Hospital District No. 1 (County-wide, also effective 1996 in Walla Walla County whose boundary contiguous with Waitsburg School District. Facilities include Dayton General Hospital, nursing home, assisted living facility, clinic and home health agency in Dayton and clinic in Waitsburg)
Irrigation Districts
- Hearn Irrigation Ditch
- Touchet Valley Irrigation District No. 16 (parts of Columbia and Walla Walla Counties)
- West End Irrigation District (RCW 87.03.005)
Library District - Columbia County Rural Library District (2005)
Mosquito Control District- Columbia County Mosquito Control District
Parks & Recreation District - Prescott Joint Park and Recreation District - runs a pool and maintains a park
Port District - Port of Columbia
School Districts
- Dayton School District No. 2
- Starbuck School District No. 035
Transportation
- Columbia Transportation Authority - Columbia County Public Transportation

