Asians in the U.S. report very high incomes, as do Russians, Greeks, and Arabs. French Canadian incomes are surprisingly higher than other Canadians. Perhaps talented French Canadians leave the relatively poor eastern provinces of Canada, while other talented Canadians stay in Canada. Japanese-American incomes are surprisingly low.
I also thought it was interesting that some of the lowest white incomes were for people who did not report an ethnicity. Those answering "American" or "Other European," those who did not answer or whose answers were uncodeable reported incomes substantially below the white average. Perhaps knowledge of family history is an indicator of higher economic status, or perhaps a higher than average tendency to marry outside of one's ethnic group is associated with lower economic status.
Mexican, Puerto Rican, and American Indian incomes are very low. Members of these groups reporting themselves to be white have higher incomes than those reporting themselves as belonging to other races.
I also found it interesting that Belgians reported low incomes. In a previous post I found that Belgian-Americans are outliers in their tendency to vote for Democrats, given the length of time Belgians have lived in the U.S.
Here are the results: