I would say the Hispanic population here beats the white by quite a hUge margin. For instance, my high school had 2 other white kids that went to it.
From my experiences, literally all of the mexican or mexican/american women that come into the store I work at are polite or courteous. I'm not saying this to make some gross over exaggeration to try and make them out to be the best people on planet earth, but even when they don't speak English and I ask them something they still say "oh no, eets okay" and go about their business.
In contrast, I will be 2 feet away from a white middle aged woman and ask if she needs some help and she'll have some snide comment like "Do you get paid to ask everyone that?" or "I bet you ask everyone that question don't you?" I always want to say "yes you cunt, because that's my fucking job at this mediocre establishment, to help you find your shit so you can leave."
But that's just my two cents...