data osakaDaily updated vector map that includes 30 data categories: administrative boundaries, road network, building, water features, points of interest, city infrastructure and more. Basemap isThe current metro area population of Osaka in 2025 is 18,922,000, a 0.24% dec from 2025. The metro area population of Osaka in 2025 was 18,967,000 , a 0.24% dec from 2025.