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Mask wearing has varied considerably throughout the COVID-19 pandemic and has been most often associated with political affiliation and specific health beliefs. The purpose of this study was to determine the relationship between mask usage, neighborhood racial segregation, and racial disparities in COVID-19 deaths. We used linear regression to assess whether the racial/ethnic composition of deaths and residential segregation predicted Americans' decisions to wear masks in July 2020. After controlling for mask mandates, mask usage increas