My main comment, which I made to Cecil already, is there was lot of great research done for getting to the bottom of this question, and I’m really glad I asked the question. 
Link to the column: Una asks and Cecil answers: Did a phantom kangaroo once haunt Chicago?
In addition to the wild wallabies mentioned in Wikipedia, there’s also a phantom colony of Japanese Jumpers
When I lived in Waukesha County, Wisconsin, in the 1970s, we had a phantom kangaroo infestation.
Various people saw them, including deputy sherriffs & school bus drivers, both of whom often saw deer & rabbits in the early monring, & so would not be fooled.
Several years ago, a wallaby was struck & killed by a truck in northern Wisconsin, & the body recovered.
Could there be a breeding-sized population?
Great column. I can’t believe that in 1974 the Trib was still trying Teddy-Roosevelt-era ‘modernizations’ of spelling, or that people bought a story that involved cops forgetting to get a person’s name and phone number, but finding the kangaroo. And then trying to handcuff it. I mean, those Sylvester cartoons where he mistakes a kangaroo for a giant mouse existed - they must have seen those.
I think that Phantom Roo’s offspring may still be terrorizing the good people of South Bend Indiana to this day!
torporindy.blogspot.com/.../kangaroo-on-loose-near-indiana-airport.html
A phantom kangaroo purportedly roaming the streets of Chicago was a
running gag in an episode of ER (season 3, episode 3: Don’t Ask, Don’t Tell).
The final scene even showed the animal sifting through garbage in alley
near the hospital.