Houston County Population 2024. The most populated counties in texas are harris county with 4,835,125, dallas county at 2,606,358, tarrant county with 2,182,947,. Published on august 22, 2024.

Its largest annual population increase was 2.4% between 2013 and 2014. Census data shows houston county georgia population up, bibb county population is down and peach county has slight growth.