Big Lake is a small rural city in Reagan County, Texas, United States. As of the 2010 Census, the city population was 2,936. It is the county seat of Reagan County.The city takes its name from a dry lake, a unique dryland plains geographic feature situated atop the divide between the Rio Grande and Colorado River watersheds, located less than two miles south of the city, through which St Hwy 137 passes. The dry lake, with no outlet, is over two sections... Show more

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