The National Football League or NFL is an American football league that includes 32 teams, divided equally between the American Football Conference (AFC) and the National Football Conference (NFC). In the 1950s, the NFL was the dominant professional football team in the United States. It has expanded to 32 franchises since the 1960s. The NFL's current expansion was approved by the league's owners at their spring meeting in 2006. There are currently 32 NFL teams and an additional three franchises that were previously owned by other sports leagues. As of 2020, there are 11 active franchises (four expansion franchises, five teams that have never had a team, and four teams that are scheduled to be relocated or disbanded).

As of 2018, 32 of the 32 current NFL franchises play in North America. This includes the team with the longest history in American professional sports, which is the San Diego Chargers of professional NFL football. In addition, all the current franchises are located in America's most populous territory, in terms of land area, with a combined area of 1,091,98 1 square miles. These are the only three NFL organizations with more than two million people living within the same ZIP code. Although the teams with this number of people are usually considered small or amateur, they are known for having the most powerful team rosters and teams in many other professional leagues in other countries.

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