In 2019, approximately 72 million children were living in a conflict zone where one or more armed actors were reported to perpetrate sexual violence against children. By this metric of risk, the authors also find that the number of children at risk of wartime sexual violence has increased since the 1990s. This brief presents new subnational estimates of this risk to children for the period 1990–2019. The study this is based on was commissioned by Save the Children and generated by PRIO, based on a new update of the SVAC database.