A growing body of evidence indicates that mass incarceration has devastating consequences for children, families, and communities. Estimates from the National Survey of Children's Health indicate that more than 5 million children have had a parent who lived with them go to jail or prison. Yet, most states do not systematically collect information about an incarcerated person's parenting status. This article describes two studies--one about parents in Minnesota prisons and another about parents in Minnesota jails--and the challenges and opportunities that developed from these studies. The authors discuss building community-university-corrections partnerships to collect essential data to inform policy and practice in Minnesota.