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Collin County
Collin County is a county located in the state of Texas, United States. In 2000 the population was 491,675 inhabitants but it was estimated at 698,851 inhabitants in 2006. The head is in the city of McKinney. This county is part of the Dallas / Fort Worth Metroplex and is located north of Dallas County. Collin County was named by Collin McKinney, one of five men who drafted the Texas Declaration of Independence.