O'Connor's Complete Stories won the 1972 U.S. National Book Award for Fiction and was named the "Best of the National Book Awards" by Internet visitors in 2009.[a]
The Flannery O'Connor Award for Short Fiction, named in honor of O'Connor by the University of Georgia Press, is a prize given annually since 1983 to an outstanding collection of short stories.
O'Connor was the first fiction writer born in the twentieth century to have her works collected and published by the Library of America, which occurred in 1988.
O'Connor's best friend, Betty Hester, received a weekly letter from her for more than a decade. These provided the bulk of the correspondence collected in The Habit of Being, a selection of the ones edited by Sally Fitzgerald. The reclusive Hester was given the pseudonym "A.," and her identity was not known until after she killed herself in 1998. Much of O'Connor's best-known writing on religion, writing, and the South is contained in these and other letters, including letters written to her friends Brainard Cheney and Samuel Ashley Brown. The complete collection of the unedited letters between O'Connor and Hester was unveiled by Emory University on May 12, 2007; the letters were given to the university in 1987 with the stipulation that they not be released to the public for 20 years.
In June 2015, the United States Postal Service honored O'Connor with a new postage stamp. The stamp, which shows O'Connor as a young woman, went on sale June 5, 2015.
The Flannery O'Connor Book Trail is a series of Little Free Libraries stretching between O'Connor's homes in Savannah and Milledgeville.
The Flannery O'Connor Childhood Home is a historic house museum in Savannah, Georgia where Flannery O'Connor lived during her childhood. The house is located at 207 E. Charlton Street on Lafayette Square. Today, in addition to serving as a museum, the house hosts several events and programs throughout the year. Their most well-known program is the annual Ursrey Memorial Lecture. The Ursrey Memorial Lecture, founded in 2009 by Mrs. Alene Ursrey, Dr. John Hunt, and Ms. Betsy Cain, includes a reading and lecture and often educational workshops and gatherings. It is free and open to the public, and is endowed "in memory of the brothers Terry and Ashley Ursrey, native Georgians who, like Flannery O'Connor, were lifelong devotees of all things Southern, particularly the art of storytelling."
The US Postal Service's 30th issuance in the Literary Arts Series, a 93 cent postage stamp, honors her life and works.