Dallas Tx Population 2025. The fastest growing city in the u.s. Cities in dallas county, texas by population (2025) there are 49 cities in dallas county, texas.

8,100.037 | thousands of persons | annual | updated: Dallas’ population grew from 1.29 million in 2022 to 1.32 million in 2023, an addition of roughly 5,510 residents according to the estimates released may 16.