Benton County 800
From The RadioReference Wiki
Radio ID's 741xxx County mobile and portable units 742xxx Kennewick, Richland, West Richland mobile 7433XX Metro units 744xxx Prosser mobile and portable units
Radio ID's 741xxx County mobile and portable units 742xxx Kennewick, Richland, West Richland mobile 7433XX Metro units 744xxx Prosser mobile and portable units