Texas Population 2025 By County Population. Hidalgo county, texas's estimated 2025 population is 908,656 with a growth rate of 1.13% in the past year according to the most recent united states census data. The most populous counties in texas are harris county with 4,835,125, dallas county at.
Travis county, texas’s estimated 2025 population is 1,342,372 with a growth rate of 0.56% in the past year according to the most recent united states census data. Discover texasโs population & how it has changed over time.