About Houston Texas: As of 2000, six incorporated places in Texas have populations greater than 500,000, two of which are global cities: Dallas and Houston. Texas has the most cities, three, with populations exceeding 1 million: Dallas, Houston, San Antonio. These three rank among the 10 largest cities of the United States. Austin, Fort Worth, and El Paso rank among the top 25 largest U.S. cities. Texas has a total of 25 metropolitan areas, with four having populations over 1 million (Dallas-Fort Worth, Houston, San Antonio and Austin) and two over 5 million.
•Houston is the fourth most populous city in the nation (trailing only New York, Los Angeles and Chicago), and is the largest in the southern U.S. and Texas. The Houston-Galveston-Brazoria Consolidated Metropolitan Statistical Area (Houston CMSA) consists of eight counties: Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery and Waller The Houston CMSA covers 8,778 square miles, an area slightly smaller than Massachusetts but larger than New Jersey.
•The metro area's population of 5.95 million in 2010 is 6th largest among U.S. metropolitan statistical areas, according to www.census.gov, and a 26% increase since 2000. Harris County