This post has been corrected
The top theme parks in North America enjoyed an estimated 2.9% increase in attendance in 2011, with the Wizarding World of Harry Potter in Orlando, Fla., accounting for about half of that rise.
The attendance estimate was released Thursday by the Burbank-based Themed Entertainment Assn., a trade group for designers of theme parks, casinos, museums, zoos and other entertainment venues. The assessment is based on an annual estimate of theme park crowds by AECOM, a Los Angeles engineering and consulting firm.
At Universal's Islands of Adventure, home to the Harry Potter theme park, attendance jumped to 7.7 million in 2011, a 29% increase compared with the previous year, according to the report.