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The official Ada County, Idaho, website for local government offices and departments. Ada County is a great place to live and work!
Ada County is located in the southwestern part of Idaho, United States. As of the 2020 census, the county had a population of 494,967, which by 2022 was estimated to have risen to 518,907. Ada County is by far the state's most populous county; it is home to 26.8% of the state's population.
Ada County Website. Named for Ada Riggs, daughter of H.C. Riggs, one of the founders of Boise and a member of the Idaho Territorial Legislature who introduced legislation to move the capital from Lewiston to Boise. Boise became the capital of Idaho in 1865.
Ada County is the largest county by population in Idaho, home to approximately 25% of the state’s residents. Ada County is more than one thousand square miles of high desert beauty, peppered with foothills and a glistening river that winds through urban and rural landscapes.
Clerks of the District Court can help with Court information, Indigent Services, Licenses and Permits and Public Records Request.
Ada County, Idaho has 1,052.0 square miles of land area and is the 31st largest county in Idaho by total area. Topics in the Ada County, Idaho data profile include: Populations and People; Income and Poverty; Education; Employment; Housing; Health; Business and Economy; Families and Living Arrangements; Race and Ethnicity.
Jul 1, 2021 · Ada County, Idaho. QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more.
Ada County is a county in the U.S. state of Idaho. As of the 2020 Census, 494,967 people lived in the county. That was more than any other county in Idaho. The county seat and largest city is Boise. Boise is also the state capital.
Ada County, ID is home to a population of 497k people, from which 97.3% are citizens. As of 2022, 5.73% of Ada County, ID residents were born outside of the country (28.5k people). In 2022, there were 22.5 times more White (Non-Hispanic) residents (411k people) in Ada County, ID than any other race or ethnicity.
Jul 1, 2023 · Ada County, Idaho. QuickFacts provides statistics for all states and counties. Also for cities and towns with a population of 5,000 or more.
