This weekend marks the one-year anniversary of both President Trump鈥檚 inauguration and the 2017 Women鈥檚 March, the latter of which saw millions of people descend on big cities such as Washington, D.C., New York, Los Angeles, Chicago, and San Francisco to rally in support of women鈥檚 rights.

To mark the occasion, hundreds of towns and cities in the US and around the world are hosting anniversary marches. Many of those took place on Saturday, January 20, and once again, huge crowds turned out with signs and chants in support of various issues (and, in many cases, against Trump).

Official numbers are still pending, and there are more events taking place all over the world on Sunday 鈥 including the official anniversary rally in Las Vegas 鈥 but here鈥檚 a look at some of the preliminary crowd estimates for a few of the many, many marches around the country on Saturday.

Los Angeles, California: LA Mayor Eric Garcetti put the count in LA at around 600,000 people , a crowd that included celebs such as Viola Davis, Scarlett Johansson, Natalie Portman, Olivia Munn, Olivia Wilde, Constance Wu, Lupita Nyong鈥檕, and Eva Longoria.

Chicago, Illinois: According to The Chicago Tribune , organizers estimate that approximately 300,000 people turned out for this year鈥檚 march. Last year鈥檚 attendance was estimated to be 250,000.

New York, New York: Mayor Bill de Blasio tweeted that more than 200,000 people turned out for the Women鈥檚 March in NYC, where speakers included Whoopi Goldberg, Halsey, and Padma Lakshmi.

鈥淥ver 200,000 people took to the street yesterday in New York City to fight for the future of their country,鈥 de Blasio wrote . 鈥淚t was the one year anniversary of one of the greatest protests in American history, and it was a promise to keep the fight going.鈥

San Francisco, California: One of the organizers, Sophia Andary, told ABC7 that she estimated there were at least 50,000 people at the SF march this year. Other reports said the city was expecting anywhere from 80,000 to 100,000.

Oakland, California: Police told the local CBS affiliate that the crowd in Oakland was estimated to be 40,000 to 50,000 strong.

Seattle, Washington: Police put the numbers in Seattle in the tens of thousands, according to The Seattle Times .

Philadelphia, Pennsylvania: One reporter tweeted that the 鈥渧ery very unofficial鈥 estimate from organizers was over 50,000 attendees in Philly.

Boston, Massachusetts:The Boston Globe put the city鈥檚 turnout at around 10,000 on Saturday.

Richmond, Virginia: The turnout in Richmond was estimated to be more than 1,000.

San Jose, California:Estimates put the crowd in San Jose at around 20,000.

Morristown, New Jersey: One of the organizers, Elizabeth Meyer, told NJ.com that police estimated the crowd to be 15,000 strong.

Baltimore, Maryland: Baltimore鈥檚 local CBS affiliate reported that 7,000 people turned out for the city鈥檚 2018 march.

Sacramento, California: According to The Sacramento Bee , this year鈥檚 estimated attendance exceeded 30,000.

Did you march? Tell us @BritandCo .

(photos via Presley Ann/Getty Images + John Lamparski/Getty Images)