Offline
Metro Populations (rounded up to nearest million) and number of NFL teams
1. New York, 19 million 2 NFL teams
2.Los Angeles 13 million 0 NFL teams
3 Chicago 10 million 1 NFL team
4.Dallas 6 million 1 NFL team
5 Philadelphia 6 million 1 NFL team
6 Houston 6 million 1 NFL team
7 Miami 5 million 1 NFL team
8 Atlanta 5 million 1 NFL team
9 Washington DC 5 million 1 NFL team
10 Boston 5 million 1 NFL team
11 Detroit 4 million 1 NFL team
12 Phoenix 4 million 1 NFL team
13 San Francisco 4 million + 31 San Jose 2 million 2NFL teams
14 Riverside/San Berdoo 4 million 0 NFL teams
15 Seattle 3 million 1 NFL team
16 Twin cities 3 million 1 NFL team
17. San Diego 3 million 1 NFL team
18. Saint Louis 3 million1 NFL team
19. Tampa 3 million 1 NFL team
20 Baltimore 3 million 1 NFL team
21 Denver 3 million 1 NFL team
22 Pittsburgh 2 million 1 NFL team
23 Portland 2 Million 0 NFL teams
as for the ones you bolded-- i'm sorry, but after living in L.A. for six years, i can tell you that the overwhelming majority of residents are transplants with allegiances to whatever team they grew up with.. i used to go to a bar that was Sains/Eagles, other bars were 49er bars, or Steelers bars, etc.. Just because it has the quantity of residents does not mean that a local team would be supported there, as evidenced by the fact that two teams have departed in the last 20 or so years.
As for Portland, one team in the Pacific Northwest is plenty enough-- that is simply my opinion, but i think that it's a popular sentiment.