McKinney is a city in and the county seat of Collin County, Texas, United States, and the second in population to Plano. According to the U.S. Census Bureau, the city's 2010 population was 131,117 The Census Bureau listed McKinney as the nation's 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 July 2010, McKinney was ranked 5th place in CNN's Money Magazine's list of best places to live in the United States. Also, McKinney is the only City in Texas that made the top ten. McKinney is one of several fast-growing communities on the northeastern edge of the Dallas-Fort Worth Metroplex. Both the city and county are named after Collin McKinney, a signer of the Texas Declaration of Independence, and a congressman for the Red River district of the Republic of Texas.