I lived in in four different states in the US, from midwest to south to the west coast and i found that neighbors are all the same with a few exception.
They mind their own business. I do have to say though that does not mean they are unfriendly because thats not the case with co-workers and people that i have met at the gym.
It also depends on you, how friendly are you and how good are you in making conversation.
I'm from Italy and i have to say ... easier to get to know your neighbors there but i cannot say the same for the rest of Europe.