20190208 16180100 1.0 TRUE High Vulnerability Raw 2010 Census Tract boundaries as supplied by the U.S. Census Bureau. Census Tracts are the largest units used by the Census Bureau for demographic tabulation. Known Errors/Qualifications: Population and ethnicity data for selected categories has been aggregated from the Block layer CEN2010B. Spatial Domain: Pima County Rectified: TIGER Maintenance Organization: PC ITD GIS Maintenance Format: Shape Primary Source Organization: US Census Bureau Primary Source Document: 2010 TIGER files Primary Source Date: 2010 Primary Source Format: Shape GIS Contact: Steve Whitney Pima County Information Technology Department - Geographic Information Systems 201 N Stone Ave., 9th Floor Tucson, AZ 85701