Alturas, California
Alturas is the county seat of Modoc County, California. Alturas is still referred to as Kasalektawi by the indigenous Achomawi. The population of Alturas was 2,827 at the 2010 census. Alturas is located at the confluence of the south and north fork of the Pit River, east of the center of Modoc County, at an elevation of 4,370 feet. As the county seat, the town is a home to regional government offices, including a California Highway Patrol office and... Show more a state Department of Motor Vehicles office.