The current metro area population of Ruian in 2025 is 1,345,000, a 2.28% increase from 2024.

• The metro area population of Ruian in 2024 was 1,315,000, a 2.57% increase from 2023.
• The metro area population of Ruian in 2023 was 1,282,000, a 2.89% increase from 2022.
• The metro area population of Ruian in 2022 was 1,246,000, a 3.15% increase from 2021.