Speaking later on Saturday in the White House briefing room, Mr. Spicer amplified Mr. Trump’s false claims. “This was the largest audience to ever witness an inauguration — period — both in person and around the globe,” he said.

There is no evidence to support this claim. Not only was Mr. Trump’s inauguration crowd far smaller than Mr. Obama’s in 2009, but he also drew fewer television viewers in the United States (30.6 million) than Mr. Obama did in 2009 (38 million) and Ronald Reagan did in 1981 (42 million), Nielsen reported. Figures for online viewership were not available.

Mr. Spicer said that Washington’s Metro system had greater ridership on Friday than it did for Mr. Obama’s 2013 inauguration. “We know that 420,000 people used the D.C. Metro public transit yesterday, which actually compares to 317,000 that used it for President Obama’s last inaugural,” Mr. Spicer said.

Neither number is correct, according to the transit system, which reported 570,557 entries into the rail system on Friday, compared with 782,000 on Inauguration Day in 2013.

https://www.nytimes.com/2017/01/22/us/politics/president-trump-inauguration-crowd-white-house.html?_r=0