Ada County is growing, and so is the need for a secure and efficient jail system.

Join Sheriff Matt Clifford on a tour of the Ada County Jail to learn why an efficient and effective jail is critical.

Learn more about the Ada County Sheriff’s Alternative Sentencing, Pretrial and Probation Programs

Welcome to the the Ada County Sheriff’s Office. As Ada County experiences unprecedented growth, our commitment to public safety remains unwavering. Our current jail infrastructure now requires upgrades to meet today's needs and anticipate tomorrow's challenges. This project is about more than just adding jail beds; it's about enhancing security, updating critical facilities and creating cost-effective solutions. Dive in to learn more.

What We Do

  • Patrol Services: Our patrol deputies are responsible for law enforcement services in unincorporated Ada County as well as the cities of Eagle, Kuna, and Star.

  • Jail Management: We oversee the operation of the 1,116-bed Ada County Jail, ensuring a safe, secure, and healthy environment for both staff and inmates.

  • Emergency Dispatch: Our 911 emergency dispatch center provides immediate assistance across the county, coordinating swift and effective responses to various emergencies.

  • Licensing: We issue driver's licenses and concealed weapons permits, adhering to both state and local laws.

  • Waterway Patrol: Our specialized units patrol county waterways, ensuring boater safety and compliance with regulations.

  • Misdemeanor Probation & Alternative Sentencing: We manage effective alternative sentencing and misdemeanor probation programs aimed at reducing recidivism and aiding reintegration into society.

  • Civil Process: We are responsible for serving civil papers from the courts, ensuring the legal process is followed accurately and efficiently.

We are committed to upholding the law, ensuring safety, and continuously improving our services to make Ada County a safer place to live, work, and play.

Tax Impact Information

The anticipated interest rate on the proposed bond issue, based upon current market rates, is three and eighty-seven hundredths percent (3.87%) per annum.  The total amount to be repaid over the life of the bonds, based on the anticipated interest rate, is $71,665,875, consisting of $49,000,000 in principal and $22,665,875 of interest. The term of the bonds will not exceed twenty (20) years from the date of issuance.

The estimated average annual cost to the taxpayer of the proposed bond is a tax of $3.60 per $100,000 of taxable assessed value, per year, based on current conditions.

The total existing indebtedness of Ada County, including interest accrued, is $0.00.

Financial Information

  • The total cost of the jail expansion project, including land acquisition costs, site development, design, permitting, construction, and furnishing is estimated to be $69.6 million. 

  • To date, the County has spent approximately $3.5 million on land acquisition costs, site development, and partial design of the project.  An additional $66.1 million will be needed to complete the project as estimated. 

  • The County plans to use a dedicated construction fund and available budgeted funds to pay an additional $17.1 million, and is asking voters to authorize the issuance of up to $49 million in bonds to fund the remaining cost.

  • Of the total project cost of $69.6 million, the County is proposing to pay $20.6 million from currently available funds and bond for $49 million.