Mason County Map, Washington


Written and Fact-checked by | Updated On: February 17, 2026, 14:47 ET

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

Map of Mason County, Washington

Map of Mason County, Washington

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

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  • About Mason County, Washington

    Mason County is located in the west-central part of Washington, United States, along the southern shores of Puget Sound. Established in 1854, the county was named after Charles Mason, the first Secretary of Washington Territory. The county seat is Shelton, which serves as the primary commercial and administrative center of the county.

    Population

    According to the United States Census Bureau, the population of Mason County was 65,726 as recorded in the 2020 Census. The county includes small cities, rural communities, and waterfront residential areas, with most residents living in Shelton and surrounding communities.

    Area and Geography

    According to the United States Census Bureau, Mason County covers a total area of approximately 1,051 square miles, including about 959 square miles of land and 92 square miles of water. The county features forested terrain, inlets of Puget Sound, and access to the Olympic Peninsula region.

    Bordering Counties

    Mason County shares borders with Jefferson County to the northwest, Grays Harbor County to the west, Thurston County to the southeast, and Kitsap County across Puget Sound to the northeast.

    Major Cities and Communities

    The principal communities in Mason County include Shelton, Allyn, Belfair, and Hoodsport. Shelton serves as the county seat and is known for its timber industry history and waterfront setting.

    Attractions and Recreation

    Mason County offers outdoor recreation opportunities along Hood Canal and Puget Sound, including boating, fishing, and hiking. The county’s forested landscapes and proximity to the Olympic Peninsula make it a destination for nature-based tourism and water activities.

    Transportation

    Major transportation routes serving Mason County include U.S. Route 101 and State Route 3, providing connections to Olympia and other parts of western Washington.

    Explore more counties in Washington Counties or view the complete USA States Map section for additional geographic information.

    Sources:

    Population and area data sourced from the United States Census Bureau (2020 Census). General county information referenced from the Official Mason County Government Website.

    Facts about Mason County, Washington

    CountryUnited States
    StateWashington
    RegionWestern Washington
    County SeatShelton
    Named AfterCharles H. Mason (Secretary of Washington Territory)
    Established1854
    Organized1854
    Coordinates47.3500° N, 123.2000° W
    Total Area1,051 sq mi
    Land Area959 sq mi
    Water Area92 sq mi
    Population (2020)65,726
    Population RankMid-sized county in Washington
    Largest CityShelton
    Main IndustriesForestry, Shellfish Farming, Manufacturing, Tourism
    Major HighwaysU.S. Route 101, State Route 3
    Time ZonePacific Time (UTC−08:00)
    Known ForPuget Sound access, Oyster farming, Olympic Peninsula scenery
    Websitehttps://masoncountywa.gov

    Top Attractions in Mason County, Washington

    • Olympic National Forest – Forest trails and scenery.
    • Lake Cushman – Boating and mountain views.
    • Hood Canal – Waterfront and shellfish areas.
    • Potlatch State Park – Beach access and camping.
    • Skokomish River Valley – Scenic river corridor.
    • Twanoh State Park – Beach park and picnicking.
    • Mason County Historical Society Museum – Local history exhibits.
    • Shelton Downtown Historic District – Shops and dining.
    • Alderbrook Resort (nearby) – Waterfront resort and spa.
    • Lower Lena Lake Trailhead (nearby) – Popular hiking trail.
    • Harstine Island – Quiet beaches and views.
    • Walker Park – Community park and events.

    Cities & Towns in Mason County, Washington

    Shelton, Belfair, Allyn, Hoodsport, Grapeview, Union, Arcadia, Harstine Island, Mason County Rural Communities