Kim, 20, finished at 17-under 271 to edge out fellow Korean Se Ri Pak by a shot for her second career LPGA Tour crown.
Pak, a 31-year-old Hall of Famer, birdied seven holes Sunday and shot a 66 for a 272.
Two more Koreans, Hee-Won Han (65) and Jee Young Lee (66), tied for third at 15-under 273 with Angela Stanford (67).
Third round co-leader Cristie Kerr(70) was in a large group at 14-under 274.
Copyright 2009 by United Press International.