The Census continued to miss blacks and Hispanics in 2010 despite achieving what was probably the most accurate count in the nation's history, according to Census analysis out Tuesday.
The latest Census missed hundreds of thousands of blacks, Hispanics, renters, young kids and middle-aged men of all races.
People who are here illegally or are poor are harder to find and count because they move more often and may avoid government contact.
The largest undercount of any racial and ethnic group — 4.88% — was of American Indians on reservations.
Offsetting that, the Census overcounted non-Hispanic whites, middle-aged and older women and homeowners. Americans who have two residences, such as college students and snowbirds, are more likely to be counted twice.