According to the band's autobiography, Melvin was engaged to the singer of a band that also played the Warped Tour in the late 1990s. While Melvin changed both the name of his former fiancee as well as her band for the book, it is heavily implied by all the other details - 1998's Warped Tour, her band being a ska band, bright red hair - to be Monique Powell of [[Save Ferris]].
In 2016, Melvin married Australian-born artist Sarah Melvin. and theyThey have identical twin daughters together: Ivy Laine Melvin and Phaedra Rose Melvin, born 21 minutes apart. Melvin also has two boys, Eli Melvin &and Caspian Melvin, and lives with his wife Sarah and all four children in the [[Encinitas]] area of Southern California.<ref>{{Cite web|url=https://heavymag.com.au/nofx-interview/|title=NOFX Interview | HEAVY Magazine|first=Dave|last=Griffiths|date=19 March 2018|website=Heavymag.com.au|accessdate=6 February 2021}}</ref> In 2017, he sold his home in San Francisco with some who viewed the home stating "This can't be a punk rocker's house. It's really tasteful."<ref>{{Cite news |last=Robertson |first=Michelle |date=February 2, 2017 |title=A punk rocker's Edwardian in Noe Valley hits the market |url=https://www.sfgate.com/realestate/article/A-punk-rocker-s-family-abode-in-Noe-Valley-hits-10891714.php |archive-url=https://web.archive.org/web/20180105230754/https://www.sfgate.com/realestate/article/A-punk-rocker-s-family-abode-in-Noe-Valley-hits-10891714.php |archive-date=January 5, 2018 |access-date=May 2, 2024 |work=SFGATE |language=en}}</ref>
Melvin was raised Jewish, but also relates to [[Buddhism]] &and [[Taoism]]. He also practices meditation and yoga.<ref>{{Cite web|url=https://musicfeeds.com.au/features/nofx-guitarist-eric-melvin-fatherhood-blink-182-soundwave-festivals-aj-maddah/|title=NOFX Guitarist Eric Melvin On Fatherhood, Blink-182 & Soundwave Festival's AJ Maddah|date=21 March 2018|website=Musicfeeds.com.au|accessdate=6 February 2021}}</ref>
