Benton 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 .
- County Land Area: 1703.1 Sq.Mi.
- Benton County Assessor - Tax Booklet - Levies
Cities and Towns
Special Purpose Governments
Air Pollution Control Authority - Benton Clean Air Authority
Conservation District - Benton Conservation District
Diking & Drainage Districts
- Benton County Diking District No. 1
- Benton Co Drainage District No. 6
- Benton Co Drainage District No. 9
- Benton Co Drainage District No. 9a
- Benton Co Drainage District No. 10
- Dissolved or Inactive Districts
- Benton County Drainage District No. 4a - Dissolved by Ordinance No. 441, passed November 6, 2007
- Benton Co Drainage District No. 11 - Dissolved by Ordinance No. 447 passed June 4, 2007
- Benton Co Drainage District No. 11a - Dissolved by Ordinance No. 447 passed June 4, 2007
- Benton County Drainage District No. 12 - Dissolved by Ordinance No. 444, passed April 23, 2007
Fire Districts - See List of Benton County Fire Protection Service Providers - MRSC
Health - Benton-Franklin Health District
Hospital Districts
- Kennewick Hospital District - Kennewick General Hospital
- Prosser Hospital District - Prosser Memorial Hospital
Housing
- Kennewick City Housing Authority
- Richland Housing Authority
Irrigation
- Benton Irrigation District - Central Benton County
- Columbia Water & Power Irrigation District - South half of Benton County
- Columbia Irrigation District (Kennewick)
- Grandview Irrigation District - 2,812 acres in West Benton and 976 acres in Yakima county
- Kennewick Irrigation District - South Central Benton County
- Kiona Irrigation District - Benton City, eastern Benton County
- Badger Mountain Irrigation District - Central Benton County
Library - Mid Columbia Library , Mid Columbia Rural Library District (Benton and Franklin Counties and contract portion of Adams county)
Library Capital Facility Area - Benton City Library Facilities Area
Mosquito - Benton County Mosquito Control District - 285 sq. mi. of watershed of the Columbia and Yakima rivers and 60 sq. miles in Eastern Yakima county
Port
- Port of Benton - Western portion of Benton County
- Port of Kennewick - Eastern portion of Benton County
Public Facilities District
- Kennewick Public Facilities District
- Richland Public Facilities District
PUD
- Benton County PUD, Public Utility Dist No. 1
School Districts Go to MRSC's List of Benton County School Districts
Transportation
- Ben Franklin Transit (Benton County Transit Authority PTBA)
Water-Sewer See List of Benton County Water and Sewer Districts - MRSC
Weed District - Benton County Weed Control District No. 1
Other Special Purpose Organizations
Operating Agency - Benton County PUD on governing board of Energy Northwest

