Largest U.S. city you don't know the location of

I didn’t really know Aurora was a city in Colorado, although I would probably have guessed right if you had asked me what state is Aurora in. The first I couldn’t have reliably guessed is probably Fort Wayne.

#57 Santa Ana – I thought Texas or New Mexico.

I’ve also never heard of Stockton, Henderson, Chula Vista, or Hialeah.

I have no idea where in Texas #70 Plano is. Texas is a big place, I hear tell.