Jeong completed her first Duramed Futures Tour title at 7-under-par 209. She picked up $10,500 for the win and jumped into eighth place on the tour's money list.
Tiffany Tavee fired a 4-under 68 Sunday to move into second place at 4-under-par 212.
Jenny Gleason, who shared the lead with Jeong entering the final round, struggled to a 3-over 75 that left her tied for third at minus-2. She was joined there by Sarah-Jane Kenyon.
Seo-Jae Lee and Kim Welch were the final players in red figures at 1-under- par 215. Allison Fouch took seventh at even-par 216 after a closing 76.