The city of Washington DC is reporting positive coronavirus cases by 'health neighborhoods' created from US Census tracts. This map is normalized to display cases per 1,000 population in each neighborhood, using American Community Survey (ACS) tract-level data from https://opendata.dc.gov/ (2018, age and poverty) and https://data.census.gov/cedsci/ (2018 5-year estimates, race and ethnicity). Positives reported are cumulative, meaning the figures represent everything reported from the beginning of the outbreak through the day's date--how many people have been sick, not how many people are sick right now--and will therefore naturally increase over time. The median for May 23 is 11.6 cases per 1,000 population (+0.3 from last data on May 21), with a range of 0.8 - 70.5 across all neighborhoods. See more graphics and data at https://bit.ly/2WmMKtT.