There are 1000's including NFL Stadiums, smaller league stadiums, high school fields, etc. But there are 31 NFL Stadiums.
Some NFL stadiums are enclosed, such as the new Cowboys stadium. So the answer is "yes", at least part of the time. Most stadiums in the NFL are NOT enclosed, though.
there are 20 stadiums with natural grass left
There are 96 official football stadiums in Spain. Apart from these, there are many other unofficial and small stadiums.
no one knows how many football stadiums there are in the world because you would have to go all around the world!
a bunch a specialy football stadiums a bunch a specialy football stadiums
it depends... football, a certain team, baseball, or all the stadiums in the world?
The answer is: 2,191,317 total people could fit in to all of the NFL Stadiums that are currently in the United States.