Humboldt County Map, California, USA

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

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

Humboldt County Map, California

Map of Humboldt County, California, United States

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

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  • About Humboldt County, California

    Humboldt County is a county located in the northwestern part of the state of California in the United States. Its county seat is Eureka. The county is known for its natural beauty, including its rugged coastline, towering redwood forests, and scenic rivers.

    Humboldt County has a population of approximately 135,000 people and covers an area of about 3,573 square miles. The county is largely rural, with a number of small towns and communities scattered throughout the region. Outdoor recreational activities such as hiking, camping, fishing, and surfing are popular in the area. Humboldt County was established on 1853.

    Eureka is the largest community in Humboldt County and serves as the county seat. Other communities in the county include Arcata, McKinleyville, Fortuna, and Trinidad.

    Facts about Humboldt County, California

    CountryUnited States
    StateCalifornia
    RegionNorthwestern California (Redwood Coast)
    County SeatEureka
    Named AfterAlexander von Humboldt
    Established1853
    Organized1853
    Coordinates40.7066° N, 123.9262° W
    Total Area4,052 sq mi
    Land Area3,568 sq mi
    Water Area484 sq mi
    Population (2020)136,463
    Population RankMid-sized county in California
    Major CitiesEureka, Arcata, Fortuna
    Main IndustriesForestry, Fisheries, Healthcare, Education, Tourism
    Major AirportCalifornia Redwood Coast–Humboldt County Airport
    Time ZonePacific Time (UTC−08:00)
    Known ForRedwood National and State Parks, Humboldt Bay, Rugged coastline, Cannabis cultivation
    Websitehttps://humboldtgov.org

    Ctities and Towns in Humboldt County

    City NameTypePopulation (2020)Pop. DensityAreaIncorporated
    ArcataCity18,8572,001.8/sq mi (772.9/km2)9.42 sq mi (24.4 km2)February 2, 1858
    Blue LakeCity1,2082,047.5/sq mi (790.5/km2)0.59 sq mi (1.5 km2)April 23, 1910
    EurekaCity26,5122,779.0/sq mi (1,073.0/km2)9.54 sq mi (24.7 km2)April 18, 1856
    FerndaleCity1,3981,165.0/sq mi (449.8/km2)1.2 sq mi (3.1 km2)August 28, 1893
    FortunaCity12,5162,384.0/sq mi (920.5/km2)5.25 sq mi (13.6 km2)January 20, 1906
    Rio DellCity3,3791,482.0/sq mi (572.2/km2)2.28 sq mi (5.9 km2)February 23, 1965
    TrinidadCity307626.5/sq mi (241.9/km2)0.49 sq mi (1.3 km2)November 7, 1870

    Places to Visit in Humboldt County

    Top places to visit in Humboldt includes Humboldt Redwoods State, Prairie Creek Redwoods State, Sue-Meg State Park, Lady Bird Johnson Grove, Redwood National, Trinidad State Beach, Fern Canyon, Redwood Sky Walk at Sequoia.

    Highways in Humboldt County

    U.S. Route 101, State Route 36, State Route 96, State Route 169, State Route 200, State Route 211, State Route 254, g State Route 255, State Route 271, State Route 283, g State Route 299.

    Nearest Airports

    Nearest airport of Humboldt is Arcata/Eureka airport.