no9-12

[10] Spatial distribution of average residential population and households per building in basic census unit

- Comparison with residential population and households in a small area and grid cell

○Hiroyuki Usui¹ (1. The University of Tokyo)

Keywords:basic census unit, building, household, residential population, household size, building use intensity

The average residential population and households per building in each basic census unit is essential for understanding building use intensity and estimating residential population in morphological urban areas considering the patterns of building locations. Since 2023, spatial data on basic census unit has been released as open data along with residential population and households. In this paper, the spatial distribution of the average residential population and households per building in each basic census unit of Chiba prefecture has been compared with those in small area (chocho-moku) and 250m grid cell. Results show that the absolute value of the difference between the average residential population per building in basic census unit and that in small area and 250m grid cell tends to be greater than one (ten in some case) where buildings with detached housing and condominium use are mixed.