McKinney is a city in and the county seat of Collin County, Texas, and the second in population to Plano. In 2008, the U.S. Census Bureau estimated that the city's population was 115,620, and 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. McKinney is one of several fast growing communities on the northeastern edge of the Dallas/Fort Worth Metroplex.

Over the last several years McKinney has gained national media attention for the multiple LEED and sustainable (Green) buildings constructed within the city. McKinney is home of the first privately developed LEED Platinum office building, and the first sustainable school in Texas. Pat Lobb Toyota is the first LEED certified Automotive Dealership, and is the hallmark for the greening of automotive dealerships, receiving visitors from around the world. Additionally, one of the two experimental sustainable Wal-Mart stores is in McKinney.