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Settlers came to the area near present-day Plano in the early 1840s.
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John Neely Bryan established a permanent settlement near the Trinity River named Dallas in 1841.
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On March 24, 1849, William Davis, who owned 3,000 acres where McKinney now stands, donated 120 acres for the townsite.
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After the Republic of Texas was annexed by the United States in 1845, and Dallas County was established the following year, Dallas was formally incorporated as a city on February 2, 1856.
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10 years after McKinney was founded, it was incorporated.
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The town was established by the Houston and Central Texas Railroad and named in 1872 for Ebenezer Allen, a state politician and railroad promoter.
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In 1872, the completion of the Houston and Central Texas Railway helped the city grow, and the city was officially incorporated in 1873.
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With construction of railroads, Dallas became a business and trading center, and was booming by the end of the 19th century. It became an industrial city, attracting workers from Texas, the South and the Midwest.
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Using money from savings and a loan, Penney joined the partnership and moved with his wife and infant son to Kemmerer, Wyoming, to start his own store. Penney opened the store on April 14, 1902. It's headquarters lie in Plano.
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Texas Instruments was founded in 1951. It emerged after a reorganization of Geophysical Service. It's headquarters lie in Dallas.
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Allen was a small town of a few hundred residents when it was incorporated in 1953.
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A petition to request an incorporation election for Fairview was submitted to the county judge and commissioners’ court on April 21, 1958, and following an election on May 7, 1958, and count of all 50 ballots, the town was incorporated, ordered by Collin County Judge W. E. Button.
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In 1970, the population reached 17,872, and by 1980, it had exploded to 72,000. Sewers, schools and street development kept pace with this massive increase, largely because of Plano's flat topography, grid layout and planning initiatives.
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Since it's incorporation, it has grown dramatically due to the construction of U.S. Route 75, the Dallas/Fort Worth International Airport, and the development of nearby Dallas and Plano.
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McKinney experienced moderate population growth, from 15,193 in the 1970 census, to 21,283 in the 1990 census. By the mid-1980s the town had become a commuter center for residents who worked in Plano and Dallas.
