data oregon 2024Chart and table of population level and growth rate for the state of Oregon from 1900 to 2025. The population of Oregon in 2025 was 4,272,371 , a 0.44% increase from 2025. The population ofOregon state parks saw a record 56.6 million visits in 2025, surpassing the previous record set in 2021. The increase in visitors, particularly on the Oregon Coast, has