MySpace said it was pleased it had identified and removed the profiles of the
offenders.
Critics of MySpace call for new laws to make such sites safer for children.
MySpace is a personal website tool allowing people to post blogs, music, and
videos.
More than 80 million people have registered a MySpace page. News Corp bought
the site for $580m last year.
'Screams for action'
The new figures were first released by officials in two states - North Carolina
and Connecticut - which have been pressing MySpace to reveal data about sex
offenders found to be using the site.
"The exploding epidemic of sex offender profiles on MySpace - 29,000 and
counting - screams for action," said Connecticut Attorney General Richard
Blumenthal.
In North Carolina, Attorney General Roy Cooper wants a state law that would
require children to obtain parental permission before creating profiles on
sites such as MySpace, and require the site to check parents' identity.
He said such a law would mean "fewer children at risk, because there will be
fewer children on those web sites".
Under current rules, users must be over the age of 14 to register with MySpace.
In a statement, MySpace said: "We're pleased that we've successfully identified
and removed registered sex offenders from our site and hope that other social
networking sites follow our lead."
There are about 600,000 registered sex offenders in the United States.
