Irving is a city in Dallas County, Texas, United States. It is part of the Mid-Cities region of the Dallas–Fort Worth metroplex and is an inner ring suburb of Dallas. Irving is noted for its racial and ethnic diversity. The city had a population of 256,684 according to the 2020 United States Census, making it the twelfth-most populous city in Texas, and the 87th most populous in the U.S. Irving includes the Las Colinas mixed-use master-planned community and part of the Dallas Fort Worth International Airport.

Dallas County is the second-most populous county in the U.S. state of Texas with a 2020 U.S. census of 2,613,539, making it the ninth-most populous county in the country. Dallas County is included in the Dallas-Arlington-Fort Worth metropolitan statistical area—colloquially referred to as the Dallas–Fort Worth metroplex. Municipal expansion within Dallas County has blurred the geographic lines between cities and between neighboring counties.