estimating 1.8 million attendees at Obama's first inauguration. In the absence of an official source, multiple groups have stepped in to fill the void. Politicians, media organizations, and crowd ...

Over a million people gathered on the National Mall to watch the Inauguration of President Barack Obama and Vice President Joe Biden on January 20, 2009 (Photo by Da Experts estimate crowd sizes ...

President-elect Donald Trump is being sworn in on Monday as his inauguration ceremony is set to take rare form inside the U.S. Capitol.

Trump, a Republican, was unhappy with photographs published by media outlets suggesting his inauguration crowd in Washington's National Mall was smaller than the one that had gathered for former ...

Crowd-size experts estimate the number of people on the National Mall for Obama's first inauguration was between 800,000 and 1 million. Trump drew about a third of that total in 2017, they say.