"largest attendance" is correct and usable in written English.
You can use it to refer to the greatest number of people attending an event, such as, "The concert had the largest attendance of any musical performance in the city's history."
Several weeks later at the San Francisco Gay Freedom Day Parade, 250,000 people attended, becoming the largest attendance at any gay event in U.S. history to that point.
He noted that 3.6 million spectators attended the 1994 World Cup, the largest attendance in the tournament's history.
Weeks later, 250,000 people attended the 1977 San Francisco Gay Freedom Day Parade, the largest attendance at any Gay Pride event to that point.
The Golden State Warriors drew their largest attendance of the season for that Nov. 27 game against Houston.
Nor is it Michigan Stadium, with the largest attendance in the country (114,804 at one recent game), and recently renovated to the tune of $226 million.
The show drew the largest attendance ever at the society, and its enthusiastic critical reception began to change the way Aboriginal art was viewed.
PARIS — There was a large attendance of Deputies in the French Chamber yesterday [Jan.
Large attendance could go a long way toward helping raise the funds needed for the permanent home that Mr. Nanavati, 56, describes as "so needed".
The three Council meetings devoted to this subject drew a large attendance of Mormons and members of the Church of the Nazarene, a powerful force here.
Mr. Barro, a renowned economist, and Ms. McCleary, a lecturer in Harvard's government department, theorized that larger attendance figures could mean that religious institutions were using up a disproportionate share of resources.
Last June, the US lost to Italy in a friendly at BBVA Compass Stadium in Houston in front of 17,241 – a larger attendance than the US soccer team drew for a game against Canada at the same venue last January.
