Marvin began his radio career in 1971 as a country music DJ at KWMC in Del Rio, Texas. After that, he worked at various stations including WWOD Lynchburg, Virginia, K102 FM El Paso, Texas, WJEZ and WJJD Chicago, Illinois, and KKAT Salt Lake City, Utah, and Top 40 station KIXZ in Amarillo, Texas. He switched to talk radio in the late 1980s starting at WTKN St. Petersburg, Florida and then moved to WFLA in Tampa. From there, he moved to WTMJ Milwaukee, Wisconsin, WLS Chicago (twice), and KHOW and KKZN in Denver, Colorado. He has also guest hosted nationally for Ed Schultz, Jerry Springer, and Alan Colmes.
Marvin has interviewed many famous guests on his show, including Howard Dean, John Kerry, Jimmy Carter, and Mike Gravel, as well as other guests and local Colorado politicians including Mark Udall, Bill Ritter, Ed Perlmutter, and Diana DeGette.
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- Cuprisin, Tim (2005-01-05). "'Idol' makes some smart tweaks for next season". Milwaukee Journal Sentinel. pp. 8B. Retrieved 9 March 2011.
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- Jay Marvin Retires From Radio. AllAccess.com: September 14, 2010.
- Marvin, Jay. "This Is the End". In Exile. Archived from the original on September 18, 2010.
- Jay Marvin's page on Denver's Progressive Talk Channel (760 AM)