2025 Volume 24 Issue 3 Pages 391-397
Population aging and urban redevelopment have progressed simultaneously, leading to localized shifts in demographic structures. This study analyzes the spatial transition of age composition and its relationship with accessibility to urban facilities across districts in Tokyo wards between 2000 and 2020. Using cluster analysis based on age composition at the neighborhood level, the study identifies characteristic patterns of population transition and evaluates their association with accessibility indicators to urban facilities. A stability index was developed to quantify the temporal consistency of age composition and to examine its relationship with facility density. The results indicate that districts characterized by a balanced working-age population or dispersed residential patterns tend to exhibit both high accessibility and demographic stability, whereas areas with intensive high-rise residential development show increasing population and facility density.
