Cogar is a small unincorporated rural community in Caddo County, Oklahoma, United States. It is located about 12 miles west of Minco, Oklahoma on Oklahoma State Highway 37, and about 5 miles east of Salyer Lake on Oklahoma State Highway 152. The post office was established March 25, 1902, and discontinued September 30, 1954. The exterior of the abandoned W.S. Kelly gas station and general store in Cogar can be seen in the 1988 movie Rain Man.

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