Organizers said Saturday that an estimated 750,000 people turned out to downtown Los Angeles for the national Women's March, many more than expected.

A Facebook page for the event showed 93,000 indicating they would attend, but organizers said some 750,000 people showed up, according to a local Los Angeles NBC affiliate.

BREAKING: 750,000 people attending Women's Rally downtown LA. Organizers expected 80,000. @nbcla pic.twitter.com/RoAY5TKyHV — Marin Austin (@MarinNBCLA) January 21, 2017

Marches are taking place across the country, with some of the largest demonstrations taking place in Washington, D.C., Chicago and Los Angeles.

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Parade routes had to be altered in D.C. and Chicago after more people showed up than expected and the demonstrations became a safety issue.

The crowd for the march in D.C. was originally estimated to be about 200,000, but organizers on Saturday said the turnout ended up being about 500,000, according to the Associated Press.

"Our march route is flooded. There is no safe way to march. We are just going to sing and dance and make our voices heard here," an organizer told some of the rally attendees in Chicago, according to the Chicago Tribune.