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Moore County Texas Cities/Towns - Cactus, Dumas (County Seat), Masterson, Sunray |
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Moore County is a county located in the U.S. state of Texas. In 2016, its population was 22,120. The county seat is Dumas, which is named for Louis Dumas, originally from the Sherman, Texas, area. History Moore is named for Edwin Ward Moore, the commander of the Texas Navy. 
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