Yeah, they honestly do not have a "community" as we see it.I will say Filipinos for one. Maybe the Chinese and Koreans.
Depends on their ethnicity, their language, where they grew up, how wealthy they are, first/second/third generation, religion, etc.
Now, a grouping of upper-middle class, second-generation, Buddhist,Han Chinese people living near an Orthodox Jewish neighborhood, most of which are likely to have what could be referred to as a "community," because they share so many similarities.
But trust me, other than that, they really don't.
I've grown up around Vietnamese and Chinese kids my whole life, Americans see what they want to see, but they don't have a tight-community unless they've known each other for years.