Cotton tail rabbits are prevalent in Wisconsin. It's strange that you have them in an urban area, although perhaps it's not so urban as say New York City or Boston.
I used to live in Santa Fe, New Mexico and there were quite a lot of rabbits but they were kept in check by owls and coyotes. You may want to contact a local wildlife official or a university about programs for introducing hawks and other predators into an area. I know they exist for Wisconsin.
The [url=https://www.raptorresource.org/recovery.htm]Raptor Resource Project[/url] has released some falcons into Wisconsin. You may also want to get in touch with people at the [url=https://www.raptorresearch.com]Linwood Springs Raptor Research Center[/url] and see what can be done to introduce raptors into your area. Even if they can't assist you, they may still be able to point you in the right direction.
This kind of problem happens when there is an imbalance in the ecosystem. The only real
solution is to bring it back into balance. Which is why many of us promote gardening with plants that are native to your area.