The current metro area population of Kitakyushu-Fukuoka in 2025 is 5,466,000, a 0.22% decline from 2024.

• The metro area population of Kitakyushu-Fukuoka in 2024 was 5,478,000, a 0.22% decline from 2023.
• The metro area population of Kitakyushu-Fukuoka in 2023 was 5,490,000, a 0.24% decline from 2022.
• The metro area population of Kitakyushu-Fukuoka in 2022 was 5,503,000, a 0.24% decline from 2021.