I don't live in a major city.

Looking at the research it shows that subjects who self-identify as loving America can be preducted by best by being older, and political party, though not wealth at all.

So I don't really have any hard-data to justify my impression that it's uneducated blue-collar white men without much going for them that vociferously love america, maybe it's just country music that gives that impression, or the type of uneducated poor who enter the army with blind faith in our institutions, etc.