Counties are ranked by the percent of land area that is rural, as of the 2010 Census, with ties broken by residents per square mile, according to 2019 5-year population estimates.

Most rural counties in Illinois. A surprising number of U.S. counties have 100% rural land-702, in fact. Stacker compiled a list of the most rural counties in Illinois using data from the U.S. Census ...

Cook County came in the middle of the pack in a recent county health ranking for Illinois, but seven other Chicago area counties were among the top 20. Latest U.S.