Adams County Map, Washington


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

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

Map of Adams County, Washington

Map of Adams County, Washington

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

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  • About Adams County, Washington

    Adams County is located in the south-central part of Washington, United States, within the Columbia Basin region. Established in 1883, the county was named after John Adams, the second President of the United States. The county seat is Ritzville, while Othello is the largest city and an important center for agriculture and local commerce.

    Population

    According to the United States Census Bureau, the population of Adams County was 20,613 as recorded in the 2020 Census. The county includes small cities and rural farming communities, with many residents living in Othello and Ritzville.

    Area and Geography

    According to the United States Census Bureau, Adams County covers a total area of approximately 1,925 square miles, including about 1,920 square miles of land and 5 square miles of water. The county features irrigated farmland, open plains, and semi-arid landscapes shaped by the Columbia Basin Project.

    Bordering Counties

    Adams County shares borders with Lincoln County to the north, Whitman County to the east, Franklin County to the south, and Grant County to the west.

    Major Cities and Communities

    The principal communities in Adams County include Othello, Ritzville, Washtucna, and Lind. Ritzville serves as the county seat, while Othello is the largest city and a key agricultural hub.

    Attractions and Recreation

    Adams County offers outdoor recreation opportunities including fishing, boating, and wildlife viewing in nearby lakes and natural areas. The county’s agricultural landscapes and open spaces reflect its strong farming heritage.

    Transportation

    Major transportation routes serving Adams County include Interstate 90 and State Route 17, providing connections to Spokane, Moses Lake, and other parts of eastern 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 Adams County Government Website.

    Facts about Adams County, Washington

    CountryUnited States
    StateWashington
    RegionEastern Washington
    County SeatRitzville
    Named AfterJohn Adams (2nd U.S. President)
    Established1883
    Organized1883
    Coordinates47.0036° N, 118.5606° W
    Total Area1,925 sq mi
    Land Area1,919 sq mi
    Water Area6 sq mi
    Population (2020)20,613
    Population RankOne of the least populous counties in Washington
    Largest CityOthello
    Main IndustriesAgriculture, Food Processing, Farming
    Major HighwaysInterstate 90, U.S. Route 395
    Time ZonePacific Time (UTC−08:00)
    Known ForWheat farming, Columbia Basin agriculture, Irrigated farmland
    Websitehttps://www.co.adams.wa.us

    Top Attractions in Adams County, Washington

    • Potholes State Park – Lakes, dunes, and boating.
    • Potholes Reservoir – Fishing and water recreation.
    • Columbia National Wildlife Refuge – Wildlife and desert lakes.
    • Palouse Falls (nearby) – Iconic waterfall views.
    • Lind Coulee – Dramatic scabland landscape.
    • Othello Community Park – City park and events.
    • Othello Old Hotel Art Gallery – Local art exhibits.
    • Adams County Historical Society – County history displays.
    • Seep Lakes Wildlife Area – Birdwatching and fishing.
    • Palouse to Cascades Trail (nearby) – Walking and biking trail.
    • Washtucna Historic Area – Small-town history and views.
    • Columbia Plateau Farmlands – Scenic agricultural landscapes.

    Cities & Towns in Adams County, Washington

    Ritzville, Othello, Washtucna, Hatton, Lind, Benge, Adams County Rural Communities