Cheap Apartments For Rent In Downers Grove . Last updated may 10 at 5:44 pm. The average rent of a studio apartment in downers grove is $1,150 per month. 13411389 Monomoy St Apartments for Rent 1341 Monomoy St, Aurora, IL from www.zumper.com As of november 2021, the average apartment rent in downers grove, il is $1,283 for a studio, $1,179 for one bedroom, $1,786 for two bedrooms, and $4,543 for three bedrooms. The average rent of a studio apartment in downers grove is $1,150 per month. Finding a home nearby is easier than you think.