Poorly controlled acute pain is associated with worsened patient outcomes. Prior studies suggest that acute pain is a common complaint among hospitalized pediatric patients, but recent studies with substantial numbers of patients from US hospitals are lacking. We retrospectively reviewed inpatients at a single academic children’s hospital during twelve 24-hour periods in 2021. Outcomes were assessed for patients on non–intensive care unit (ICU) inpatient floors and in ICUs. The primary outcome was any presence of moderate to severe pain. Of 1355 patients on a non-ICU inpatient floor and 485 patients in the ICU, 23.5% and 58.6%, respectively, had ≥1 moderate to severe pain score during the 24-hour analysis period. While the mean pain score was low for the majority of patients, moderate to severe pain is frequent in hospitalized children. Future studies may focus on identification of variables associated with pediatric inpatients at risk of moderate to severe pain as well as improved pain prevention and reduction strategies.