The U.S. were on the back foot for much of the first half but hit New Zealand with a two-goal burst before the break and piled on the punishment after.
Tobin Heath opened the scoring at 34 minutes when she side-footed home from close range to complete a nice move started down the left.
Rose Lavelle doubled the lead five minues later when she finished off a similar move and cross from the left flank.
With a range of experienced replacements, the U.S. dominated the second half and 36-year-old substitute Lloyd scored two close range goals in the 62nd and 83rd minutes before Sam Mewis rounded off the scoring six minutes from time.
Winners of the 1991, 1999 and 2015 World Cups, the U.S. play Mexico on May 26 before heading to France to face Group F opponents Thailand, Chile and Sweden.
New Zealand open their World Cup against the Netherlands on June 11 before facing Canada and Cameroon.
The tournament kicks off on June 7 when hosts France play South Korea. (Reporting by Andrew Downie; Editing by Ian Ransom) DM