The current metro area population of Zanjan in 2025 is 510,000, a 1.59% increase from 2024.

• The metro area population of Zanjan in 2024 was 502,000, a 1.41% increase from 2023.
• The metro area population of Zanjan in 2023 was 495,000, a 1.85% increase from 2022.
• The metro area population of Zanjan in 2022 was 486,000, a 1.89% increase from 2021.