- AlexLv 57 years agoFavorite Answer
That's a really hard question to answer. The "big 4" (basketball, baseball, hockey, and football) have 30, 30, 30, and 32 teams at the highest level. Soccer actually draws more fans than hockey, so I'll include the MLS too, which is currently at 19 teams. That gives 141 teams at the highest level in the most popular sports.
However, there are other sports and minor league teams all over the U.S. I would guess that there are at least 1000 pro sports teams.