Crime in Chicago is a data visualization by Open City that lets you explore crime trends in Chicago's 50 wards. It was built using open data about Chicago crimes released by the Chicago Police Department.
With this website, you can compare crime levels over the years and across city wards. You can further explore each ward’s crime profile, which shows daily crime volumes going back to 2002, crime types and subcategories, and contact info for each Ward Alderman.
Find out more here