Googling the web I stumbled on to this nice little site on
Asian American demographics (for some bizarre reason they add "Russians" to this list). There isn't a whole lot there, but it is nice layout for the Census data they are presenting. On a mildly related note, no surprise, George Barna finds that Asian Americans are the
least religious of American ethno-racial groups while black Americans are the most (in the context of a wider survey). From the text:
...In fact, there was only one measure for which a majority of Asians exhibited commitment: 52% said their religious faith is very important to them, lagging the 68% among whites, 72% among Hispanics, and 89% among African-Americans.
No big surprise.