Lassen County on the map of California as of 2025. Cities, roads, borders and directions in Lassen County of California.

Lassen County is a General Law county situated in the northeastern section of California. This famous county was formed back in 1864. The county's total area is 4558 square miles. The county is home to 33 thousand people. The county seat of Lassen County is Susanville. This map shows the borders of Lassen County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Lassen County.