Zenit reports that the figure already exceeds 184,000, which surpasses expectations.
Casey said, "These numbers show the level of anticipation that is building in Australia and around the world."
Australian pilgrims top the list of those registered with 50,710, while those from the US are second with 36,171. A final total of 500,000 is expected.
184,800 Registered for World Youth Day (Zenit, 2/9/07)
LINKS (not necessarily endorsed by Church Resources)
World Youth Day 2008
WYD stays at Randwick, Premier rules (CathNews, 31/8/07)
Greens join Randwick exit chorus (CathNews, 30/8/07)
Not moving: Randwick trainers defiant (CathNews, 30/8/07)
Not too late to move WYD: Cups King (CathNews, 27/8/07)
WYD seeks Sydney harbour site for opening (CathNews, 20/8/07)
Conversions off the WYD inter-faith agenda (CathNews, 16/8/07)
WYD to showcase faith potential to unite world (CathNews, 15/8/07)
Howard, Rudd promise $15 million more for WYD (CathNews, 13/8/07)
Condoms not on for WYD (CathNews, 30/7/07)
Love in the air for WYD (CathNews, 24/7/07)
Young Christians helping WYD pilgrims get piece of action (CathNews, 19/7/07)
Open hearts to WYD pilgrims, Fisher urges Sydney (CathNews, 17/7/07)
Can't lease Randwick for WYD, trainers tell club (CathNews, 11/7/07)
Randwick no place for pope, opines Cup winner Cummings (CathNews, 10/7/07)
Pope set to come, trainers to sue over WYD (CathNews, 5/7/07)