The current metro area population of Gaziantep in 2026 is 1,882,000, a 1.24% increase from 2025.

• The metro area population of Gaziantep in 2025 was 1,859,000, a 1.42% increase from 2024.
• The metro area population of Gaziantep in 2024 was 1,833,000, a 1.55% increase from 2023.
• The metro area population of Gaziantep in 2023 was 1,805,000, a 1.8% increase from 2022.