It really really really depends on the university. MOST universities are content if you completed the last 4 years of your secondary education in an English-speaking setting. You've done that. Others will take a high SAT Critical Reading score as sufficient evidence of your English proficiency. You've got that too. However, there are still a few universities that would make you take the TOEFL if they in any way suspected that English is not your first language. SUNY Stony Brook comes to mind, for example.
I've also heard a story of someone getting adopted by an American family at age 3 (!) and still being required to present TOEFL scores at one university...
Personally, if I were you, I'd just check the "native speaker" box and not deal with the hassle. You are clearly not going to need ESL classes, so who cares?