LAX: 13M + 4.5M (adding Riverside, San Bernardino, Ontario for charity's sake)
San Diego: 3M
DFW: 6.5M
SEA: 3.4M
BOS: 4.6M
DC: 5.5M
Orlando: 2M
LAS: 2M
FTL: 5.5M (counting Miami)
That's 73.3 million people, so adding in the few we underestimated (eg you can drive to SFO from San Jose if you feel like it) then 1/4 is actually pretty good.
