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 2021 United States census estimate, the county had a population of 511,931,  making it by far the state's most populous county; it is home to 26.8% of the state's population. The county seat and largest city is Boise,  which is also the state capital. 
Ada County Offices. 200 W. Front Street Boise, Idaho 83702. Phone: (208) 287-6840 Fax: (208) 287-6849. County Seat: Boise. Ada County Website
Office: 200 W Front St, Boise, ID 83702. Email: email@example.com. Courts. 208-287-6900. Juvenile Courts. 208-577-4800. Licenses/Permits. 208-287-6840. Property Records.
ADA COUNTY, Idaho — This article originally appeared in the Idaho Press. The results of the 2023 annual snapshot count of Ada County's homeless residents show a 6% increase from 2020, the last ...
Interesting Ada County Facts: Ada County was established on December 22, 1864. Ada County was named after Ada Riggs, the daughter of Idaho Territorial Legislator H.C. Riggs, one of the founders of Boise. The surface area of Ada County is 1054.99 square miles. Average commute time to work in Ada County is under 20 minutes.
(The fee for Ada County residents includes an additional $8.00 Ada County Highway District fee) OFF-HIGHWAY VEHICLES (ATVs, MOTORBIKES, UTVs, and specialty Off-Highway Vehicles [SHOV]) $12.00 – For an Off-Road Sticker (includes a $1.50 vendor fee for Idaho Parks and Recreation)
Table. All Topics Population Age and Sex Race and Hispanic Origin Population Characteristics Housing Families & Living Arrangements Computer and Internet Use Education Health Economy Transportation Income & Poverty Businesses Geography. Ada County, Idaho. Population, Census, April 1, 2020. 494,967.
Ada County renters receive $4M in aid per month. Idaho initially received $200 million in federal rental assistance under a pandemic relief package approved by former President Donald Trump. Boise ...
The following are confirmed and probable COVID-19 cases for Central District Health's jurisdiction of Ada, Boise, Elmore, and Valley Counties. For statewide counts, visit coronavirus.idaho.gov. View resources for businesses and the general public here. For school resources, click here.