harris county is a county located in the u.s. state of texas within the houston–sugar land–baytown metropolitan area. as of 2000 u.s. census, the county had a population of 3,400,578 (though a 2007 estimate placed the population at 4,011,475), making it the most populous county in texas and the third most populous county in the united states. its county seat is houston.
government administration
