Harris County Texas Population 2025. Graph and download economic data for resident population in harris county, tx (txharr1pop) from 1970 to 2023 about harris county, tx; The county recorded its highest growth in 1982 (5.89%) and recorded its lowest growth.
Cities in harris county, texas by population (2025) there are 64 cities in harris county, texas. With nearly 5 million total residents, itโs now the third most populous county in the.