ancestry: Modal ancestry by County according to US 2000 Census
Description
This data set records the population and the three most frequently
reported ancestries by US county, according to the 2000 census.source
U.S. Census Bureau. The ancestry data were extracted from Summary
File 3:
http://factfinder.census.gov/jsp/saff/SAFFInfo.jsp?_pageId=sp4_decennial_sf3
which is based on the long form questionnaire (asked to 1 in
6 households surveyed).References
http://www.census.gov/prod/cen2000/doc/sf3.pdf