Allen is located on the northern boarder of Plano, eight miles southeast of McKinney. It covers 27 square miles all within southeastern Collin County. Its population almost doubled from 19,000 in 1990 to nearly 37,000 in 1998. The current population is 60,611, and by 2010 it is expected to exceed 80,000. Homes in Allen range from under $100,000 to well over $200,000 with an average price of $142,400. New construction, both in home building and new shopping areas can be found throughout Allen. New schools are being built to accommodate the influx of people.

The Allen Independent School District has a current enrollment of about 10,000 and is commitment to excellence in education. AISD has 14 schools and offers many innovative programs.

The town was established in 1870 by a purchasing agent for the Houston and Texas Central Railway and named in 1872 for Ebenezer Allen, former attorney general of Texas and a promoter of the railroad. In 1876 a post office opened there. Four years later Denton outlaw Sam Bass supposedly committed the first train robbery in the state at Allen. By 1884 Allen had a population estimated at 350, three churches, a school, a chair factory and a flourmill.

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