The current metro area population of Osaka in 2025 is 18,922,000, a 0.24% decline from 2024.

• The metro area population of Osaka in 2024 was 18,967,000, a 0.24% decline from 2023.
• The metro area population of Osaka in 2023 was 19,013,000, a 0.25% decline from 2022.
• The metro area population of Osaka in 2022 was 19,060,000, a 0.27% decline from 2021.