McKinney is a city in and the county seat of Collin County, Texas, United States, and the second in population to Plano. It is part of the Dallas-Fort Worth metroplex, and is located about 32 miles north of Dallas.  Boththe city and the county were named for Collin McKinney, signer of the Texas Declaration of Independence, and a congressman for the Red River district of the Republic of Texas. He was the author of a bill establishing counties in the northern part of the State.  Central Park Campus of Collin College, University of Texas at Dallas, University of North Texas are some of the campuses located in Collin county.  Excellent Schools and most students go to College that graduate.