The current metro area population of Porto Alegre in 2025 is 4,269,000, a 0.68% increase from 2024.

• The metro area population of Porto Alegre in 2024 was 4,240,000, a 0.66% increase from 2023.
• The metro area population of Porto Alegre in 2023 was 4,212,000, a 0.65% increase from 2022.
• The metro area population of Porto Alegre in 2022 was 4,185,000, a 0.58% increase from 2021.