The director of Brown's Funeral Service in nearby Atoka confirmed the death, saying McEntire had been in declining health since suffering a stroke a few years ago. He was 86.
A post on the country star's Instagram account says her father was "born and bred a cowboy," and she's thankful he's no longer suffering.
The post includes a photo of her father on horseback, saying: "He always told us kids never to run your horse to the barn. He was just taking his time to go on home."
Funeral home director Eddie Brown says a service will be held Wednesday.