Dataset with quantitative and qualitative data related to children's in care subjective wellbeing in Catalonia and their perceptions of COVID-19. It includes: (a) survey data gathered in a study requested by DGAIA (Direcció General d'Atenció a la Infància i l'Adolescència) in 2020 to know how children in care aged 10 to 17 years evaluated the lockdown and mobility restrictions and to link children's evaluations to their subjective wellbeing; (b) comparable data from 2014 related to children's in residential care subjective well-being, gathered in the framework of the International Survey of Children’s Worlds.