The "very difficult choice" was described by Ballerini as the "outcome of a journey of love, growth, and effort that eventually has come to an end."
"Words are hard to come by here, But I'm incredibly appreciative of our years of marriage to Morgan and excited about the upcoming seasons.
While jointly hosting the CMC Awards in Australia in March 2016, the couple got to know one another.
In Dec of that year, they got engaged, and on December 2, 2017, they got married in Cabo San Lucas, Mexico.
Ballerini is getting ready for the Sept. 23 launch of her album Subject to Change via Black River Entertainment.
She said on social media that the album is a reflection of her recent personal development.
"When I was younger, the concept of change frightened me," Ballerini wrote in a July Instagram post.