Government of Ada County, Idaho
From Ballotpedia
 Ada County, Idaho |
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| Seat: Boise |
| Population (2020): 494,967 |
| County Commissioners: 3 |
| County Website: Official website |
The county government of Ada County is located in Boise, Idaho. The county was established in 1864. It covers a total of 1,054.99 square miles in southwest Idaho.[1]
Elections
2025
Ada County, Idaho, is holding general elections for Greater Boise Auditorium District seats on May 20, 2025. The filing deadline for this election is March 21, 2025.
2024
Ada County, Idaho, held general elections for prosecutor, sheriff, county commission, county highway district board, college board, soil and water conservation district board, and judicial offices on November 5, 2024. A primary was scheduled for May 21, 2024. The filing deadline for county offices was March 15, 2024. The filing deadline for highway district board and magistrate judges was August 7, 2024. The filing deadline for college and soil and water conservation districts was August 30, 2024
2022
Ada County, Idaho, held general elections for assessor, clerk, coroner, sheriff, treasurer, county commissioners, highway district board, community college board, conservation district board, and district court magistrate judges on November 8, 2022. A primary was scheduled for May 17, 2022. The filing deadline for this election was March 11, 2022.
2020
Ada County, Idaho, held general elections for commissioner seats 1 and 2, sheriff, and prosecutor on November 3, 2020. A primary was scheduled for May 19, 2020. The filing deadline for this election was March 13, 2020. Ada County also held a general election for highway districts 1, 2, and 5, a general election for three college district seats, and a general retention election for 14 magistrate judges on November 3, 2020. The filing deadline for these elections was August 5, 2020.
2018
Ada County, Idaho, held general elections for county commissioner, district court clerk, county treasurer, county assessor, county coroner, county highway district commissioner, and College of Western Idaho trustee on November 6, 2018. If a race had multiple candidates for a party nomination, a primary was held on June 5, 2018.
Elected officials
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If any officeholder information below is no longer accurate, please contact us with any updates. |
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Board of commissioners
- See also: County commission
The board of commissioners functions as the county's primary legislative and policy-making body. Most boards also control county land usage, oversee environmental issues and possess executive powers, meaning they have the authority to appoint or remove departmental heads. Ada County has three supervisors who are elected at large to specific districts for four-year terms.
The table below provides information on each of the county commissioners:
The widget below automatically displays information about their meetings. The topic list contains a sampling of keywords that Voterheads, a local government monitoring service, found in each meeting agenda. Click the meeting link to see more info and the full agenda:
Other elected officials
Ada County residents also elect the following public officials:
See also
| Ada County, Idaho | Idaho | Municipal government | Other local coverage |
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