The mobster drama Gangster Squad, starring Josh Brolin and Ryan Gosling as maverick cops battling a mob boss played by Sean Penn, opened below expectations in third place with US$16.7 million.
Controversies surrounding Zero Dark Thirty, which depicts waterboarding and other harsh interrogation methods, may have helped create buzz for the film.
Politicians accused the CIA of misleading film-makers by telling them such interrogation methods helped track down bin Laden.
Gangster Squad also drew controversy after the mass shooting at an Aurora, Colorado, movie theatre left 12 dead. Warner Bros delayed release as the film originally featured mobsters shooting into a cinema audience.
Ticket sales
US and Canadian cinemas
1. Zero Dark Thirty US$24m
2. A Haunted House US$18.8m
3. Gangster Squad US$16.7m
4. Django Unchained US$11m
5. Les Miserables US$10.1m
6. The Hobbit: An Unexpected Journey US$9m
7. Lincoln US$6.3m
8. Parental Guidance US$6.1m
9. Texas Chainsaw 3-D US$5.1m
10. Silver Linings Playbook US$5m
-AAP