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is a city in and the county seat of Brazoria County, Texas, United States, within the Houston-Sugar Land-Baytown metropolitan area. Angleton lies at the intersection of State Highway 288, State Highway 35, and the Union Pacific Railroad. The population was 18,130 at the 2000 census. Angleton is in the 14th congressional district, and is represented by Congressman Ron Paul.
Angleton was founded in 1890 near the center of Brazoria County and named for the wife of the general manager of the Velasco Terminal Railway. A bitter rivalry emerged between the town and nearby Brazoria for the location of the county seat; Angleton was chosen as the seat in 1896 and re-chosen by county-wide election in 1913. The town was incorporated on November 12, 1912.
As the county seat, Angleton hosts the Brazoria County Fair every October; it is considered Texas's largest county fair.