Lassen County Map, California, USA

Written and fact-checked by | Last Updated: December 16, 2025, 14:30 ET

Map of Lassen County - Lassen County is a county located in the U.S. state of California. Lassen County Map showing cities, highways, important places and water bodies. Get Where is Lassen County located in the map, major cities in Lassen county, population, areas, and places of interest.

Lassen County Map, California

Map of Lassen County, California, United States

About Lassen County Map, California: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.

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    • About Lassen County, California

    Lassen County is a county located in the northeastern part of the state of California in the United States. Its county seat is Susanville. The county is known for its natural beauty, including Lassen Volcanic National Park and a variety of outdoor recreational opportunities.

    Lassen County is a county located in the U.S. state of California. It's county seat is Susanville. As per 2020 census, the population of Lassen County is 33159 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 4,558 sq mi (11,805 km2). Lassen County was established on 1864.

    Susanville is the largest community in Lassen County and serves as the county seat. Other communities in the county include Westwood, Bieber, and Doyle.

    Facts about Lassen County, California

    CountryUnited States
    StateCalifornia
    RegionNortheastern California (Great Basin & Cascade Range)
    County SeatSusanville
    Named AfterPeter Lassen
    Established1864
    Organized1864
    Coordinates40.6739° N, 120.5946° W
    Total Area4,558 sq mi
    Land Area4,541 sq mi
    Water Area17 sq mi
    Population (2020)32,179
    Population RankOne of the least populous counties in California
    Major CitySusanville
    Main IndustriesGovernment Services, Corrections, Agriculture, Forestry
    Major AirportSusanville Municipal Airport
    Time ZonePacific Time (UTC−08:00)
    Known ForLassen Volcanic National Park (part), High desert landscapes, Outdoor recreation
    Websitehttps://www.lassencounty.org

    Ctities and Towns in Lassen County

    City NameTypePopulation (2020)Pop. DensityAreaIncorporated
    SusanvilleCity16,7282,112.1/sq mi (815.5/km2)7.92 sq mi (20.5 km2)August 24, 1900

    Places to Visit in Lassen County

    Top places to visit in Lassen includes Lassen Volcanic National Park, Juniper Lake, Susanville Ranch Park, Bizz Johnson National, Eagle Lake, Painted Dunes, Butte Lake, Cinder Cone, Snag Lake.

    Highways in Lassen County

    U.S. Route 395, State Route 36, State Route 44, State Route 139, State Route 299.

    Nearest Airports

    Nearest airport of Lassen is Reno-Tahoe International Airport (RNO).

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