The current metro area population of Semipalatinsk in 2025 is 326,000, a 0.62% increase from 2024.

• The metro area population of Semipalatinsk in 2024 was 324,000, a 0.62% increase from 2023.
• The metro area population of Semipalatinsk in 2023 was 322,000, a 0.31% increase from 2022.
• The metro area population of Semipalatinsk in 2022 was 321,000, a 0% increase from 2021.