 About 11.0% of families and 14.3% of the population were below the poverty line, including 14.5% of those under age 18 and 9.1% of those age 65 or over.Two California Department of Corrections and Rehabilitation facilities, High Desert State Prison and California Correctional Center, are in Susanville.Susanville lies at the junction of California State Routes 36 and 139.