A New Way to Look at Regional Survey Data: Differences in Vacancy Rates and Persons per Household by County, 2000-2005

Regional survey estimates and their significance levels are simultaneously displayed in maps that show all 3,141 U.S. counties and equivalents. An analyst can focus his attention on significant differences (or those with a different, low-valued uncertainty measure) for all but the very smallest counties. Differences between Census 2000 and the 2005 American Community Survey values are shown.