Looking for a cheap apartment for rent in Monroe County, MI? With RENTCafé, finding an affordable apartment in Monroe County, MI has never been easier. We feature 2 low-priced rentals directly from property managers, with rents lower than the Monroe County, MI average. What is a cheap rent in Monroe County, MI? The average apartment rent in Monroe County is $752 per month so any rental south of $602 would be considered cheap here. Size matters though, so if you are in a market for a studio, expect to pay around $324 per month. If you’re looking to upgrade to a 1-bedroom apartment you’ll pay around $456, while a cheap 2-bedroom apartment will cost you about $552 per month.