McCready shot herself Feb. 17 after years of battling depression and drug addiction, as well as the January death of her fiance, music producer David Wilson. The mother of two young sons was 37 when she died.
People.com said more than 200 mourners -- including McCready's mother, Gayle Inge, and brothers, Josh and T.J. McCready -- attended the hour-long service at the Cathedral of the Incarnation Wednesday afternoon.
Large images of Mindy McCready at the height of her career were positioned near the church's altar, while "I'll See You Yesterday," the last song McCready recorded, played in the background, People magazine said.
Wilson was the father of McCready's 11-month-old son, Zayne. McCready also had a 6-year-old son, Zander, with her ex-husband, Billy McKnight.