Residential segregation is increasing in the Bay Area, which hurts community health, the residents’ ability to move up the economic ladder and undermines the possibility of a community with a sense of shared purpose and common destiny. For instance, census tracts in East Palo Alto, where median household incomes are significantly less than the rest of the County, also have some of the highest residential segregation levels in San Mateo County. Segregation levels in San Mateo County are also increasing. San Mateo County’s Divergence Index, which measures the demographic diversity of the county compared to the greater Bay Area, rose from a moderate segregation value of 0.1277 in 1970 to a high segregation value of 0.2540.