In 2016, the Allegheny County Jail began offering naloxone, a life-saving medication that rapidly reverses opioid overdose, to people exiting the jail. Since then, the jail has distributed over a thousand naloxone kits. This data brief describes the naloxone distribution program and provides information on the people who received naloxone, including their demographics, the communities they lived in after leaving jail, and how many died of an overdose following their release from jail.