Allen is a city in Collin County, Texas, United States, a northern suburb of Dallas. As of the 2010 census the city had a total population of 84,246. According to the City of Allen, the city has a total area of 27.1 square miles. None of the area is covered with water except the small ponds scattered throughout the city.
From 1908 through 1948, Allen was a stop along the Texas Traction Company's interurban line from Denison to Dallas. Allen was a small town of a few hundred residents when it was incorporated in 1953. Since this time, 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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