The current metro area population of Ruiru in 2025 is 485,000, a 4.3% increase from 2024.

• The metro area population of Ruiru in 2024 was 465,000, a 4.49% increase from 2023.
• The metro area population of Ruiru in 2023 was 445,000, a 4.46% increase from 2022.
• The metro area population of Ruiru in 2022 was 426,000, a 4.67% increase from 2021.