The City of Chicago's open data portal lets you find city data, lets you find facts about your neighborhood, lets you create maps and graphs about the city, and lets you freely download the data for your own analysis. Many of these datasets are updated at least once a day, and many of them are updated several times a day. The open data portal is required under an Executive Order signed by Mayor Rahm Emanuel on December 10, 2012.
The Chicago Department of Public Health and PHAME Center at UIC believe data should be accurate, transparent and easy to understand. We created the Chicago Health Atlas so that you can review, explore and compare health-related data over time and across communities. In addition, the Chicago Health Atlas provides a place for residents to see our progress implementing Healthy Chicago, the citywide plan to improve health equity.
The Illinois State Water Survey (ISWS) is a division of the Prairie Research Institute at the University of Illinois. The Water Survey’s scientists conduct state-of-the-art research and collect, analyze, archive, and disseminate high-quality, objective data and technical information. The Water Survey’s data, services, and expertise provide a sound technical basis for the people and policymakers of Illinois to make decisions.
The Illinois Department of Public Health is an advocate for and partner with the people of Illinois to re-envision health policy and promote health equity, prevent and protect against disease and injury, and prepare for health emergencies. Collected here is the IL Health Data Portal, Vital Statistics, DDRG Database, and more.