5_Exhibit B_Resolution_Attachment 2

30 Income segregation between jurisdictions in the region can also be analyzed by calculating regional values for the segregation indices discussed previously. Similar to the regional racial segregation measures shown in Table 5, Table 10 presents dissimilarity index, isolation index, and Theil’s H index values for income segregation for the entire nine-county Bay Area in 2010 and 2015. In the previous section of this report focused on neighborhood level income segregation, segregation indices were calculated by comparing the income demographics of the census tracts within a jurisdiction to the demographics of the jurisdiction as a whole. In Table 10, these measures are calculated by comparing the income demographics of local jurisdictions to the region’s income group makeup. For example, looking at 2015 data, Table 10 shows the regional isolation index value for very low-income residents is 0.315 for 2015, meaning that on average very low-income Bay Area residents live in a jurisdiction that is 31.5% very low-income. The regional dissimilarity index for lower-income residents and other residents is 0.194 in 2015, which means that across the region 19.4% of lower-income residents would need to move to a different jurisdiction to create perfect income group integration in the Bay Area as a whole. The regional value for the Theil’s H index measures how diverse each Bay Area jurisdiction is compared to the income group diversity of the whole region. A Theil’s H Index value of 0 would mean all jurisdictions within the Bay Area have the same income demographics as the entire region, while a value of 1 would mean each income group lives exclusively in their own separate jurisdiction. The regional Theil’s H index value for income segregation decreased slightly between 2010 and 2015, meaning that income groups in the Bay Area are now slightly less separated by the borders between jurisdictions. Table 10: Regional Income Segregation Measures Index Group 2010 2015 Isolation Index Regional Level Very Low-Income (<50% AMI) 0.277 0.315 Low-Income (50%-80% AMI) 0.157 0.154 Moderate-Income (80%-120% AMI) 0.185 0.180 Above Moderate-Income (>120% AMI) 0.467 0.435 Dissimilarity Index Regional Level Below 80% AMI vs. Above 80% AMI 0.186 0.194 Below 50% AMI vs. Above 120% AMI 0.238 0.248 Theil's H Multi-income All Income Groups 0.034 0.032 Universe: Population. Source: Data for 2015 is from U.S. Department of Housing and Urban Development, American Community Survey 5-Year 2011- 2015 Low- and Moderate-Income Summary Data. Data for 2010 is from U.S. Department of Housing and Urban Development, American Community Survey 5-Year 2006-2010 Low- and Moderate-Income Summary Data.