Benton County
Jerome Delvin
Chairman
Michael Alvarez, Pro-Tem
Will McKay, Commissioner
Benton County Courthouse 620 Market Street Prosser, WA 99350 509) 786-5600 Fax: (509) 786-5625
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Washington State Home Page
Tri Cities Regional Chamber of Commerce
Lori Mattson
President & CEO
Miles Thomas
Govt Affairs 7130 W Grandridge Blvd Kennewick, WA 99336 509) 736-0510
City of Prosser Benton County
Link to Law Enforement Hospitals
Link to Local Government
Link to Airports & Facilities
WA State Listings For County:
Updated 11-12-2025
I Benton County Government
Benton County
Jerome Delvin
Chairman
Michael Alvarez, Pro-Tem
Will McKay, Commissioner
Benton County Courthouse 620 Market Street Prosser, WA 99350 509) 786-5600 Fax: (509) 786-5625
Benton Franklin Health District
Public Contact
7102 W Okanogan Pl Prosser, WA 99336 (509) 460 4200
City of Richland
Mayor Theresa Richardson
& City Council & City Council 505 Swift Blvd. Richland, WA 99352 509.942.7390
City Council City of Kennewick
Mayor Gretl Crawford
601 7th Kennewick, WA 509) 585-4273 Fax (509) 585-4424
City of West Richland
West Richland Mayor Brent Gerry
3801 W Van Giesen St West Richland, WA 99353 (509) 967-3431 Fax: (509) 967-5706
City of Prosser
Mayor Gary Vegar
& City Council 601 7th Street, Prosser, WA 99350 (509) 786-8218 (509) 786-3717 ~ fax
Benton Franklin Council of Governments
Michelle Holt
Executive Director 1622 Terminal Dr. Richland, WA 99352 509) 943-9185 Fax: (509) 943-6756
