what county is dumas, tx
DUMAS, TX (MOORE COUNTY) DUMAS, TEXAS (Moore County). Dumas, the county seat of Moore County, is at the junction of U.S. highways 87 and 287 in the center of the county. It was named for Louis Dumas, president of the Panhandle Townsite Company in Sherman, who purchased railroad survey lands in the Panhandle.