By some estimates, nearly 100,000 people attended the Women's March in Portland on Saturday. In Seattle, that number was estimated around 175,000.
While people across the nation turned out for solidarity marches with the Women's March on Washington, western cities saw some of the highest rates in the country.
Researchers Jeremy Pressman of the University of Connecticut and Erica Chenoweth at the University of Denver have compiled estimated numbers for marches around the world. The pair point out they created the list for public interest, rather than any association with the universities.
Not surprisingly, Washington, D.C. — where the movement to protest the policies of the incoming Trump administration originated — had the most well attended march in the nation, according to the data. Around 680,000 people marched there for women's rights, which is more people than actually live in the city.
But western cities were also near the top of the list, when comparing the top 20 most populous cities in the nation.
Denver came in second on that list, and Seattle was No. 3, with a turnout around 25 percent per capita.
Portland, with a population estimated at 632,309 in the latest Census Bureau figures, ranked sixth when compared to the nation's largest cities. Turnout in Portland was just under 16 percent.
The cities with the smallest turnouts were in states that favored President Donald Trump in the election. Those include San Antonio, Texas; Columbus, Ohio and Jacksonville, Florida.
Here are the top 20 most populous cities in the nation, plus Portland and Washington, D.C., ranked by turnout per capita:

Amelia Templeton
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John Rosman
/Demonstrators march through the rain at Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/A Portland police officer wearing a "pussyhat" — what has become a symbol of the Women's March — hugs a demonstrator during the Women's March on Portland on Saturday, Jan. 21, 2017.

Amelia Templeton
/Friends Diana Baird, 87, and Kate Robinson, 81, at the Women's March on Portland. Baird said a woman's right to seek an abortion is particularly important to her. "I believe in women's rights, period," she said. The retirees say at least 20 retired women from the Terwilliger Plaza retirement community joined the march Saturday, Jan. 21, 2017.

Amelia Templeton
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John Rosman
/Demonstrators march through the rain at Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/A girl peers above the crowd at Women's March on Portland Saturday, Jan. 21, 2017.

Amelia Templeton
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John Rosman
/Demonstrators march through the rain at Women's March on Portland on Saturday, Jan. 21, 2017.

Amelia Templeton
/Demonstrators gather at Pioneer Place in downtown Portland during the Women's March Saturday, Jan. 21, 2017.

Amelia Templeton
/A little boy marching along with his mother, fist bumps a police officer during the Women's March on Portland, Saturday, Jan. 21, 2017.

Amelia Templeton
/Young girls carry signs through the streets of Portland during the Women's March Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators march through the rain at Women's March on Portland on Saturday, Jan. 21, 2017.

Amelia Templeton
/A woman pauses to take in the crowd during the Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/Many signs at the Women's March on Portland feature divisive things President Donald Trump said during his campaign.

John Rosman
/Demonstrators march through the rain at Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators cross the Morrison Bridge onto Portland's Waterfront for Women's March on Portland on Saturday, Jan. 21, 2017.

Phoebe Flanigan
/An onlooker surveys the crowd on the west side of Portland during the Women's March Saturday, Jan. 21, 2017.

Amelia Templeton
/A woman wears a pink bra on her head during the Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators stand near a spray-painted anti-Trump message on the side of downtown Portland building during the Women's March on Portland on Saturday, Jan. 21, 2017.

Amelia Templeton
/Women dressed in the spirit of famed Russian protest band Pussy Riot stand in unity during the Women's March on Portland, Saturday, Jan. 21, 2017.

John Rosman
/An aerial view of the crowd from the Morrison Bridge during the Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators march through the rain at the Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators march through the rain at Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators march through the rain at Women's March on Portland on Saturday, Jan. 21, 2017.

John Rosman
/Women hold signs at Women's March Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators march through the rain at Women's March Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators pour from bridges onto Portland's waterfront at Women's March Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators pour off the Morrison Bridge to the Portland waterfront for the Women's March on Saturday, Jan. 21, 2017.

Phoebe Flanigan
/Members of the March Fourth Marching Band demonstrate downtown in Portland for the Women's March.

John Rosman
/Demonstrators march through the rain at Women's March Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstraters march at Women's March Portland on Saturday, Jan. 21, 2017.

John Rosman
/Demonstrators march through the rain at Women's March Portland on Saturday, Jan. 21, 2017.

Amelia Templeton
/Rain-soaked signs pile up near a public trashcan after the Women's March on Portland, Saturday, Jan. 21, 2017.
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