List of municipalities in Texas in the context of "Harris County, Texas"

Dallas County is a county located in the U.S. state of Texas. As of the 2020 census, the population was 2,613,539, and was estimated to be 2,656,028 in 2024, making it the second-most populous county in Texas and the eighth-most populous county in the United States. Its county seat is Dallas, the third-most populous city in Texas and the ninth-most populous city in the United States. The county was founded on March 30, 1846 and was possibly named for George Mifflin Dallas, the 11th Vice President of the United States under U.S. President James K. Polk. Dallas County is included in the eleven-county Dallas–Fort Worth–Arlington metropolitan statistical area, which is the fourth-most populous metropolitan area in the United States.

Municipal expansion within Dallas County has blurred the geographic lines between cities and between neighboring counties.

San Antonio (/ˌsæn ænˈtoʊnioʊ/ SAN an-TOH-nee-oh; Spanish for "Saint Anthony") is a city in the U.S. state of Texas. It is the seventh-most populous city in the United States, second-most populous city in Texas and second-most populous city in the Southern U.S., with a population of 1.43 million at the 2020 census. The San Antonio metropolitan area, with an estimated 2.76 million residents, ranks as the third-largest metropolitan area in Texas and the 24th-largest in the nation. It is the county seat of Bexar County.

Founded in 1718 as a Spanish mission and colonial outpost, San Antonio became the first chartered civil settlement in present-day Texas in 1731. The city was named in 1691 by a Spanish expedition in honor of Saint Anthony of Padua. It was part of the Spanish Empire, then the Mexican Republic from 1821 to 1836, before joining the United States. Straddling the regional divide between South and Central Texas, San Antonio anchors the southwestern corner of an urban megaregion colloquially known as the Texas Triangle. It lies about 80 miles (130 km) from Austin along the I-35 corridor, and together the San Antonio–Austin metroplex is home to approximately 5 million people.

Keller is a city in Tarrant County, Texas, United States, in the Dallas–Fort Worth metroplex. According to the 2020 census, the city's population is 45,776, making Keller the 78th-most populated city in Texas. The most recent population estimate, as of July 1, 2021, is 45,397.

In the early 1850s, settlers established Keller and the town became a stop on the Texas and Pacific Railway. The settlers settled around the wooded region in Keller because of Keller's proximity to the Trinity River water supply and abundant farmland. On November 16, 1955, Keller became incorporated.