The Big Cities Health Coalition (BCHC) launched an upgraded Big Cities Health Inventory (BCHI) Data Platform this week, which allows comparisons of key public health indicators across 28 large, urban cities. In all, the tool features over 17,000 data points – including more than 50 health and socio-demographic indicators. The data set (which is available at (bigcitieshealth.org/city-data) is the first of its kind in providing these data in a comparable manner at the city level.