Lewisville ( LOO-iss-vil) is a city in Denton County, Texas, United States, that barely overlaps with Dallas County, Texas. It is a suburb within the Dallas–Fort Worth Metroplex. The 2000 United States Census placed the city's population at 77,737 and the 2010 Census placed it at 95,290, making it one of the fastest-growing city populations in the United States and the 33rd most populous in Texas. It occupies 36.4 square miles (94 km2) of land and includes 6.07 square miles (15.7 km2) of Lewisville Lake.Originally called Holford's Prairie, Lewisville dates back to the early 1840s. The arrival of the town's first railroad in 1881 engendered its initial growth, and the expansion of the area's transportation infrastructure spurred further development in the early part of the 20th century. Lewisville incorporated in 1925, and when construction of Lewisville Lake was completed in the 1950s, the city began to expand rapidly. Lewisville's proximity to Lewisville Lake has made it a recreational hub of the Dallas–Fort Worth metroplex. The city's municipal government, led by a nonpartisan city council, focuses its recreational and cultural investments on facilities such as Toyota of Lewisville Park and the MCL Grand Theater. The area's transportation infrastructure has evolved around the I-35 Corridor along Interstate 35E. The diversity of its population and industry has created a stable economic climate. Lewisville Independent School District provides most of the area's public education programs.

The Colony is a city in Denton County, Texas, United States, and a suburb of Dallas. The population was 36,328 at the 2010 census.

Frisco is a city in Collin and Denton counties in the State of Texas. It is part of the Dallas–Fort Worth metroplex and is about 25 miles (40 km) from both Dallas Love Field and Dallas/Fort Worth International Airport. The city population was 116,989 at the 2010 census, with the 2020 census placing it at a population of 207,748.Frisco was the fastest-growing city in the United States in 2017, and also the fastest-growing city in the nation from 2000 to 2009. In the late 1990s, the northern DFW suburban development tide hit the northern border of Plano and spilled into Frisco, sparking rapid growth into the 2000s. Like many of the cities in the northern suburbs of Dallas, Frisco serves as a bedroom community for professionals who work in DFW. Since 2003, Frisco has received the designation Tree City USA by the National Arbor Day Foundation. Frisco Independent School District, the local school district, is known for exceptional performance among its students.

Southlake is a city located predominantly in Tarrant County with minor areas extending into Denton County in the U.S. state of Texas. Southlake is a suburb of Dallas/Fort Worth. As of the 2019 census estimate it had a population of 32,376.