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<br /> <br />20 <br />diverse each Bay Area jurisdiction is compared to the racial diversity of the whole region. A Theil’s H <br />Index value of 0 would mean all jurisdictions within the Bay Area have the same racial demographics as <br />the entire region, while a value of 1 would mean each racial group lives exclusively in their ow n <br />separate jurisdiction. The regional Theil’s H index value for racial segregation decreased slightly <br />between 2010 and 2020, meaning that racial groups in the Bay Area are now slightly less separated by <br />the borders between jurisdictions. <br />Table 5: Regional Racial Segregation Measures <br />Index Group 2010 2020 <br />Isolation Index Regional Level <br />Asian/Pacific Islander 0.317 0.378 <br />Black/African American 0.144 0.118 <br />Latinx 0.283 0.291 <br />White 0.496 0.429 <br />People of Color 0.629 0.682 <br />Dissimilarity Index Regional Level <br />Asian/Pacific Islander vs. White 0.384 0.369 <br />Black/African American vs. White 0.475 0.459 <br />Latinx vs. White 0.301 0.297 <br />People of Color vs. White 0.296 0.293 <br />Theil's H Multi-racial All Racial Groups 0.103 0.097 <br />Universe: Population. <br />Source: IPUMS National Historical Geographic Information System (NHGIS). U.S. Census Bureau, 2020 Census State Redistricting <br />Data (Public Law 94-171) Summary File, 2020 Census of Population and Housing, Table P002. Data from 2010 is from U.S. Census <br />Bureau, 2010 Census of Population and Housing, Table P4.