Jones, who led after each round at Mount Vintange Plantation Golf Club, finished at 15-under 273, three strokes ahead of Wendy Ward, who closed with a 70. Laura Diaz (73), Patricia Meunier-Lebouc (67) and rookie Lorena Ochoa (70) tied for third another shot back.
Jones is the first American to win on the LPGA Tour since Meg Mallon took the Canadian Women's Open in August. Two years ago, Jones ended a 10-tournament winless run by the Americans with a victory at the Kathy Ireland event in Texas.
'I was talking about that on the drive here,'' Jones said. 'It's just kind of funny that, two years ago, that it was 10 wins before an American hit one and I got it there. And I'm just glad to do it'' this time.
The 43-year-old Jones won for the 13th time in her career and the first time since taking the Big Apple Classic in 2001.
Jones and other Americans brushed aside the international rivalry, saying they were proud the world's best women played on their tour. However, U.S. golfers have struggled this year.
In addition to not winning a tournament, only two of the top-10 players on the money list before the event were Americans -- Cristie Kerr (sixth) and Pat Hurst (ninth).
There were a few times this week when patriotism was on display. Ward and Jones, U.S. Solheim Cup teammates last year, shared a fist pump and a shout of 'Americans .... yeah,'' when the United States held the first five places after the second round Friday.
Ward said Sunday she didn't think questions about the streak ``have a whole lot of value, but it makes it fun to see a good friend win.''
Jones led Diaz by two strokes at the start of the final round, and quickly extended the advantage. Jones rolled in birdie putts of five feet at No. 1 and eight feet at the fourth.
The fiery Jones swept her arm across as the putt at No. 4 dropped, lifting her four shots clear of the fading field.
Jones played the remainder of the round steadily and safely, hitting fairways and greens. She squandered chances to extend the lead, missing a five-foot birdie try on the sixth, and an eight-foot attempt on the seventh.
Jones came up big when she needed it most.
After chunking a sand shot at the par-3, 15th, Jones rolled in a 15-foot putt for bogey. And earlier on the eighth hole, she curled in a testy, 12-foot par putt and kicked her leg high as if she'd already won the tournament.
Essentially, she had.
The 28-year-old Diaz could only watch as her playing partner hit approach shots closer and made the putts.
Diaz's charge all but ended at the fifth hole when she drove into the woods, chipped out and made a double bogey to fall six off the pace.
Ward made four straight birdies on Nos. 3-6 to get to 13-under, within two shots of Jones. But she faltered with a run of four bogeys in her next five holes. Ward tried to rally later in the round, making eagle on the par-4 13th and birdie on the 14th, but she couldn't get closer to the final margin.
Copyright 2003 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.