Wired has an article up about urban coyotes:
...coyotes are thriving in city suburbs like Itasca and Palatine Village, and have even been spotted in the heart of Chicago's metropolitan area. They've also been sighted in other major urban areas, including St. Louis, Minneapolis, Detroit, Cleveland and Boston, Gehrt said -- a result, in part, of increased urban sprawl and coyotes' adaptability.
Update: It's been pointed out to me that Seed has already covered this topic.