General Members

Ada County
Ada County Highway District
City of Boise
Canyon County
Canyon Highway District #4
City of Caldwell
City of Eagle
City of Garden City
City of Kuna
City of Meridian
City of Middleton
City of Nampa
City of Parma
City of Star
Nampa-Highway District #1

Special Members

Boise State University
Capital City Development Corporation
Idaho Department of Environmental Quality
Idaho Transportation Department
Valley Regional Transit

Ex Officio

Central District Health Department
Office of the Governor
Greater Boise Auditorium District