Blackhawk-Camino Tassajara is in Contra Costa County, California, east of the San Francisco Bay.

Blackhawk-Camino Tassajara is directly east of Oakland, near and to the east of Danville, not far from interstate 680.

It consists of the Blackhawk Country Club area and the surrounding Blackhawk-Camino Tassajara area.

Blackhawk-Camino Tassajara has been listed as one of the twenty wealthiest communities in the United States.