O'Donnell
- County:
- Borden County
- County Seat:
- No
- Area (mi²):
- 0.86
- State:
- Texas
O'Donnell is a city located in Borden County, Texas. O'Donnell has a 2026 population of 740. O'Donnell is currently growing at a rate of 1.65% annually and its population has increased by 4.23% since the most recent census, which recorded a population of 710 in 2020.