- Living in her hometown of Knoxville, Tennessee, she is involved with Child Help, which is an organization for abused children. She also continues to sing in her home and works with young musical students. (2003)
- A character in Kevin Lima's Enchanted (2007) is named Mary Ilene Caselotti. This is a reference to Mary Costa, Ilene Woods (who voiced the title character in Cinderella (1950)), and Adriana Caselotti (who voiced the title character in Snow White and the Seven Dwarfs (1937)).
- She has appeared in two films that have been selected for the National Film Registry by the Library of Congress as being "culturally, historically or aesthetically" significant: Sleeping Beauty (1959) & One Flew Over the Cuckoo's Nest (1975).
- Is a lifelong Democrat.
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