Richardson is a city in Dallas and Collin counties in the U.S. state of Texas. As of the 2019 American Community Survey, the city had a total population of 121,323. Richardson is an inner suburb of Dallas. It is home to the University of Texas at Dallas and the Telecom Corridor, with a high concentration of telecommunications companies. More than 5,000 businesses have operations within Richardson's 28 square miles (73 km2), including many of the world's largest telecommunications and networking companies, such as AT&T, Verizon, Cisco Systems, Samsung, ZTE, MetroPCS, Texas Instruments, Qorvo, and Fujitsu. Richardson's largest employment base is provided by the insurance industry, with Blue Cross and Blue Shield of Texas's headquarters, a regional hub for GEICO, regional offices for United Healthcare, and one of State Farm Insurance's three national regional hubs located in the community.

Plano ( PLAY-noh) is a city in Collin County and Denton County, Texas, United States. It had a population of 285,494 at the 2020 census. It is part of the Dallas–Fort Worth metroplex.

Mesquite is a suburban city located east of the city of Dallas, Texas, in the United States. Most of the city is located in Dallas County, though a small portion extends into Kaufman County. As of 2019 census estimates, the population was 140,937, making it the 22nd-most populous city in the U.S. state of Texas. Mesquite is positioned at the crossroads of four major highways (Interstates 30, 635, 20, and U.S. Route 80), making locations such as downtown Dallas, Lake Ray Hubbard, Dallas Love Field, and DFW International Airport accessible. According to legislative action, the city is the "Rodeo Capital of Texas". In 2016, Mesquite received a Playful City USA designation for the fourth year in a row. The city has been named a Tree City USA by the National Arbor Day Foundation for over 25 years. The city of Mesquite holds the 10th-longest reign in all of Texas.Unique to suburbs of Dallas and Fort Worth, the city of Mesquite is served by its own local airport, Mesquite Metro Airport. Companies and institutions with a major presence in the city are the United Parcel Service, Sears, AT&T, Charter Spectrum, Eastfield College, Ashley Furniture, and FedEx.

Addison is an incorporated town in Dallas County, Texas, in the United States. Addison is situated to the immediate north of the city of Dallas. The town's population was 13,056 at the 2010 census. Addison and Flower Mound were the only two Texas municipalities labeled "towns" with a population greater than 10,000 in the 2010 census; since then the municipalities of Prosper and Trophy Club, also identifying as towns, have also exceeded 10,000 in population estimates. Addison is best-known within the Dallas–Fort Worth–Arlington metroplex region for its abundance of restaurants and nightlife.