The Ada County Sheriff's Office is the largest local law enforcement agency in Idaho, with 655 employees.
We are committed to giving every citizen the best possible service — to ensure Ada County is a safe place to live, work, and play.
The Ada County Jail was built in 1977 and held a maximum of 160 inmates. The jail can now house 1,217 inmates. Jail deputies also run alternative sentencing programs like work release, labor detail, and community service.
The Patrol Division employs over 100 deputies who provide police services to all unincorporated areas of Ada County and the cities of Kuna, Star and Eagle. Deputies protect 1164 square miles of land and patrol more than 2124 miles of roads in Ada County.
The Ada County Sheriff’s Office runs the 911 Public Safety Communications Center for all 11 Treasure Valley law enforcement and fire agencies. We also provide the public with information about crime statistics and handle records requests.
The Ada County Sheriff’s Office offers a Neighborhood Watch program, patrol ride-alongs, and opportunities for citizens to tour the Public Safety Building and Ada County Jail. The Sheriff’s Youth Foundation provides funding to local non-profit groups geared toward helping at-risk youth.
The ACSO serves the public with several essential programs like civil court document service, issuance of concealed weapons permits and drivers licenses, code enforcement, pretrial services, and misdemeanor probation
Phone: (208) 577-3000
Fax: (208) 577-3009
Address: 7200 Barrister Dr., Boise, ID 83704