There have been 42 teams.
It is not divided into regions. There is one Premier League, with 20 teams. Teams from England and Wales play in it.
7.
They are chelsea, Arsenal and Manchester United.
5
In the E.P.L. there are 20 clubs.
Each year three teams are promoted and the last three are demoted.
Twice, at each of the teams home grounds.
20 teams
There is 4435 teams
The lowest three in the English Premier League standings at the end of the season will be relegated to the Premier League Division II.
If it's the premier league you are talking about then 4 Arsenal(3), Chelsea(2), Manchester United(11), and Blackburn Rovers(1)
Premier League teams play 38 games in a season.