The current metro area population of Oshawa in 2025 is 418,000, a 0.97% increase from 2024.

• The metro area population of Oshawa in 2024 was 414,000, a 0.98% increase from 2023.
• The metro area population of Oshawa in 2023 was 410,000, a 0.99% increase from 2022.
• The metro area population of Oshawa in 2022 was 406,000, a 1% increase from 2021.