- Daughter of David Davenport and Marica Davenport.
- Sister of Deron Davenport.
- Sister of Amy Davenport.
- Olympian Kerri Strug grew up as a close friend of Julie's sister Amy. She and her family still maintain close ties with the Davenports.
- Aussie actress Pia Prendiville is one of Julie's closest friends. They met as teenagers when Julie was on exchange in Perth, Western Australia.
- In 2002, she co-founded the Teen Theater Spotlight acting company at Muse.
- Both actresses Stacy Linn Ramsower and Kaylee DeFer have been linked as childhood friends of Julie.
- Both Julie and fellow actor Brandon Routh attended the National Bartending School in Sherman Oaks, CA.
- Former NBA player Steve Kerr is a close family friend.
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