McKinney is a city in and the county seat of Collin County, Texas, United States. It is Collin Countys second-largest city, after Plano. Part of the Dallas-Fort Worth metroplex, McKinney is about 32 miles (51 km) north of Dallas.The Census Bureau listed McKinney as the nations fastest-growing city from 2000 to 2003 and again in 2006, among cities with more than 50,000 people. In 2007, it was ranked second-fastest-growing among cities with more than 100,000 people and in 2008 as third-fastest. In the 2010 census, the citys population was 131,117, making it Texass 19th-most populous city. The most recent population estimate, produced by the city as of January 1, 2018, is 179,804. As of May 2017, McKinney City was the third-fastest-growing city in the United States.In 2014, McKinney was rated #1 by Money Magazine as "Best Place to Live" in America.
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