Social innovation has emerged as a strategic tool to foster development in disadvantaged areas. The study analyzes the spatial distribution and temporal changes of social innovation potential and its link to population dynamics in two disadvantaged Hungarian counties. Using indicators classified into input, output, and impact categories, a composite index was constructed for municipalities over three census years (2001, 2011, 2022). Moran I statistics and clustering tested spatial dependence of social innovation potential and the relationship between clusters and migration balance. Findings show positive spatial autocorrelation weakened over time. A strong link exists between social innovation potential and migration balance, with innovative settlements showing lower outmigration. Uploaded in connection with the maps (Figures 2 and 3) are the values of the components of social innovation potential, as well as the maps themselves. The database also includes, in relation to Figure 4, the migration balance for the years under study, presented by clusters. In addition to the TIF files, the ZIP folder also contains Excel files.