Fuck a link. Walk in to any bar showing football matches in the states or go to any MLS game and talk to people and you'l realize we are nowhere near the most popular team in the states. Probably 5th, maybe 6th at this point, but much of that is in the last 5 years.
From 2002-2008 or so I met less Spurs fans in America than I have fingers. This has changed since TV coverage, Dempsey and the Champions League, but still.
FWIW, I never really get the hated vibe, most neutrals seem to like Spurs just fine. There are just so many fucking Mongs out here that support the sad lot next door.
I'd say fifth. Just moved away from a pretty "soccer"-crazed city, and I met loads of Spurs fans and often saw Spurs apparel in random places (even baseball games). Never saw any City apparel or met any fans on anyone other than one of my buddies. Even saw more Everton stuff than City stuff. Just don't think they've caught on that well throughout the US, and many seem to dislike how they're often described as the "Yankees of soccer."