The Emma Stone-led drama passed the $100m mark on Tuesday in terms of domestic sales, making it one of the highest-grossing summer dramas of all time.
John Madden's remake of R-rated thriller The Debt opened in second place with $9.6m, while sci-fi horror Apollo 18 entered in third with $8.7m.
Underwater horror Shark Night 3D opened in fourth place with takings of $8.6m, while sci-fi reboot Rise of the Planet of the Apes rounds out the top five with $7.8m.
Next weekend sees the release of Steven Soderbergh's highly-anticipated thriller Contagion, starring Matt Damon, Gwyneth Paltrow, Kate Winslet and Jude Law.
This week's US box office top ten in full (studio estimates):
1. (1) The Help - $14,200,000
2. (-) The Debt - $9,670,000
3. (-) Apollo 18 - $8,700,000
4. (-) Shark Night 3D - $8,640,000
6. (2) Colombiana - $7,400,000
7. (5) Our Idiot Brother - $5,180,000
8. (3) Don't Be Afraid of the Dark - $4,940,000
9. (6) Spy Kids: All the Time in the World - $4,630,000
10. (7) The Smurfs - £4,000,000
Watch the trailer for The Help below:
