The crash happened on Thursday near 76th and Wabash Avenue in the Greater Grand Crossing, Chicago police said.
A marked CPD squad car, which had its emergency lights activated, was heading southbound on Wabash when it crashed into an SUV heading westbound on 76th, officials said.
The CPD car ended up crashing into the front gate of a house.
The officer sustained an injury to the left shoulder and was expected to be okay, CPD said.
The man driving the SUV was taken to the University of Chicago Hospital in good condition.
CPD said no citations were issued.