said by rody_44:
They share chicago with rcn, I would be surprised if chicago is actually comcasts biggest market area. Phillie used to be there biggest market and they didnt share it with anyone. They do share it with fios now tho so who knows. Im pretty sure LA has comcast and i would expect LA To be the biggest now since fios came to phillie.
Comcast has a much smaller presence in the L.A. area than in the Bay Area. Time Warner and Charter are the biggies there.--