Dalhart
- County:
- Dallam County
- County Seat:
- Yes
- Area (mi²):
- 4.782
- State:
- Texas
Dalhart is a city located in Dallam County, Texas. Dalhart has a 2026 population of 8,443. It is also the county seat of Dallam County. Dalhart is currently growing at a rate of 0.3% annually and its population has increased by 0.31% since the most recent census, which recorded a population of 8,417 in 2020.