The Americans dominated the Kiwis, outshooting them by a margin of 33-2. The win improved the USA to 14-0-2 in 2007 and 10-0-2 against teams who will be playing in the Women's World Cup.
Abby Wambach and Carli Lloyd led the Americans with two goals apiece.
Wambach scored first U.S. goal in the seventh minute on a diving header after Cat Whitehill sent a soaring free kick from just inside the U.S. half over the New Zealand defense. Wambach added her second goal with seconds left in the game on a deflection off a shot by substitute Natasha Kai.
The two goals upped Wambach's career total to 77 in 95 international games and moved her into sole possession of fifth place on the U.S. all-time scoring list behind Mia Hamm (158), Kristine Lilly (125), Michelle Akers (105) and Tiffeny Milbrett (100). She has a team-leading 11 goals in 2007.
Lloyd's goals -- the first on a long-range blast from 38 yards -- gave her her first two-goal game.
Lilly and Lindsay Tarpley also scored for the USA, which built a 5-0 lead before New Zealand scored on a penalty kick by former Duke star Rebecca Smith in the 73rd minute.
The U.S. women play their final friendly on Aug. 25 against Finland at The Home Depot Center in Carson, Calif. The USA will head to China on Aug. 27 and face North Korea on Sept. 11 in Chengdu to open the Women's World Cup.
Aug. 12 in Chicago
USA 6 New Zealand 1. Goals: Wambach 7, 90, Lilly 33, Lloyd 34, 60, Tarpley 57; Smith pen. 73.
USA -- Solo (Scurry, 46), Rampone, Whitehill, Markgraf (Ellertson, 46), Lopez, Boxx (Osborne, 64), Chalupny, Tarpley (Kai, 64), O'Reilly (Lloyd, 29), Wambach, Lilly (Jobson, 79)
New Zealand -- Bindon, R.Smith, Erceg, Jackman (McColl, 66), Percival, Oostdam (Henderson, 66), Moorwood, Duncan (Longo, 83), Humphries (Clarke, 74), Riley (Sowden, 84), Tegg.
Referee: Jennifer Bennett.