The data on this page is derived from 2000 census data from the ancestry category. Some figures are estimates based on statistical sampling. The total US population in 2000 was 273,643,274.
The Top Fifteen Ancestry Groupsas reported in the 2000 US Federal Census:
(numbers have been rounded)
Source: US Bureau of the Census: Ancestry 2000 (issued June 2004) (C2KBR-35)