4.8 M
Population
3rd in the U.S.
4,600 km²
Area
Houston
County seat
34
Cities
Harris County
Harris County is the most populous county in Texas and the third-most populous in the U.S., home to Houston and the country's largest medical center.
Harris County is the most populous county in Texas and the third-most populous in the U.S., home to Houston and the country's largest medical center.