New Zealand has long been a rugby union superpower and the All Blacks beat France 8-7 in a tense final in Auckland in October.
But the IRB said the World Cup was also a financial as well as sporting success for the host nation.
It said the 2011 World Cup was the largest event hosted in the country, with more than 1.35 million fans attending 48 matches, with revenue from ticket sales surpassing the $268.5 million target set by organisers.
This, the IRB stated, equated to more than 10 times the gross revenue generated by the next-biggest sporting event hosted by New Zealand, the 2005 British and Irish Lions rugby tour.
The World Cup is also estimated to have boosted economic activity in New Zealand by more than $500 million.
England will host the 2015 World Cup before the tournament breaks new ground by being staged in Japan, not a major rugby nation, in 2019.
Qualification for the 2015 edition starts today when Mexico are at home to Jamaica in the first of 184 matches involving 80 countries.
The full IRB group results for 2011 will be announced in May after the completion of the reporting process to the IRB council.
- AAP