Lassen County is a county located in the northeastern part of the U.S. state of California. The county seat and only incorporated city is Susanville.

Lassen County is governed by a five-member Board of Supervisors. The Board is elected by the citizens of the county and is responsible for setting policy and enacting laws. The Board is also responsible for the budget and for appointing the County Administrator, who is the chief executive officer of the county.

The county also has a number of other elected officials, including the Sheriff, District Attorney, Assessor, Auditor-Controller, Treasurer-Tax Collector, and Clerk-Recorder.

The economy of Lassen County is largely based on agriculture, forestry, and mining. The county is home to a number of large agricultural operations, including cattle ranches, dairies, and orchards. The county is also home to a number of timber companies, and is a major producer of lumber and other wood products. Mining is also an important part of the economy, with gold, silver, and other minerals being mined in the area.

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