Description: This data set represents all tracts within the San Francisco Bay Region, and contains attributes for the eight Metropolitan Transportation Commission (MTC) Communities of Concern (CoC) tract-level variables for exploratory purposes. MTC 2018 Communities of Concern (tract geography) is based on eight ACS 2014-2018 (ACS 2018) tract-level variables: Minority (70% threshold) Low-Income (less than 200% of Fed. poverty level, 28% threshold) Level of English Proficiency (12% threshold) Seniors 75 Years and Over (8% threshold) Zero-Vehicle Households (15% threshold) Single Parent Households (18% threshold)People with a Disability (12% threshold) Rent-Burdened Households (14% threshold) If a tract exceeds both threshold values for Low-Income and Minority shares OR exceeds the threshold value for Low-Income AND also exceeds the threshold values for three or more variables, it is a CoC.Not maintained, this was a one time export from MTC.