- Adams County, Washington (data.census.gov)
Adams County, Washington has 1,925.0 square miles of land area and is the 14th largest county in Washington by total area. Adams County, Washington is bordered by Lincoln County, Washington, Franklin County, Washington, Whitman County, Washington, and Grant County, Washington.
eastbound on Interstate 90
- Adams County — Thumbnail History (historylink.org)
Adams County is a predominantly rural county located in southeastern Washington, with Ritzville serving as county seat. Since 1952 Columbia River water brought through the Columbia Basin Project has irrigated region’s fertile volcanic soil.
westbound on interstate 90
- Adams County, Washington (Wikipedia)
Adams County is a county in the U.S. state of Washington. As of the 2020 census, the population was 20,613. The county seat is at Ritzville, and its largest city is Othello. The county was formed out of Whitman County in November 1883 and is named after John Adams, the second President of the United States.
