I don't know but go on www.ticketmaster.com and type in in the search box "Justin Bieber" and you"ll find out.
Justin Bieber is not having a concert in Colorado in 2010http://www.justinbiebermusic.com/events.aspxBUT ! this doesn't mean that he is not going to be in Colorado in the future !!!
it is Saturday
I heard he was going to have one in houston!
Yes~ He is going to at May 11 2011.