McKinney is a city in and the county seat of Collin County, Texas, United States. It is Collin County’s second-largest city, after Plano. An exurb of the Dallas-Fort Worth metroplex, McKinney is about 32 miles (51 km) north of Dallas.
Old Collin County Courthouse in Courthouse Square, 2016.
On March 24, 1849, William Davis, who owned 3,000 acres (12 km2) where McKinney now stands, donated 120 acres (0.49 km2) for the townsite. Ten years later, McKinney incorporated, and in 1913, the town adopted the commission form of government.
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 the 2010 census, the city’s population was 131,117, making it Texas’s 19th-most populous city. The most recent population estimate, produced by the city as of 2018, is 191,645. As of May 2017, McKinney City was the third-fastest-growing city in the United States.
For the first 125 years of its history, McKinney served as the principal commercial center for the county. The county seat provided farmers with flour, corn, and cotton mills, cotton gins, a cotton compress, and a cottonseed oil mill, as well as banks, churches, schools, newspapers, and from the 1880s, an opera house. Businesses also came to include a textile mill, an ice company, a large dairy, and a garment-manufacturing company. The population grew from 35 in 1848 to 4,714 in 1912. By 1953, McKinney had a population of more than 10,000 and 355 businesses. The town continued to serve as an agribusiness center for the county until the late 1960s.