“The home of the U.S. Government’s open data. Here you will find data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more.”—from the site. A search on “health disparities” yielded over 30 datasets.
Data USA is "the most comprehensive website and visualization engine of public US Government data."--from the website. You can select a city and see visualizations of health, demographic, economic, housing, and other data.