Dumas
- County:
- Moore County
- County Seat:
- Yes
- Area (mi²):
- 5.525
- State:
- Texas
Dumas is a city located in Moore County, Texas. Dumas has a 2026 population of 14,834. It is also the county seat of Moore County. Dumas is currently growing at a rate of 2.79% annually and its population has increased by 2.81% since the most recent census, which recorded a population of 14,429 in 2020.