Looking for a cheap apartment for rent in Santa Rosa County, FL? With RENTCafé, finding an affordable apartment in Santa Rosa County, FL has never been easier. We feature 1 low-priced rental directly from property managers, with rents lower than the Santa Rosa County, FL average. What is a cheap rent in Santa Rosa County, FL? The average apartment rent in Santa Rosa County is $1,042 per month so any rental south of $834 would be considered cheap here. Size matters though, so if you are in a market for a studio, expect to pay around $355 per month. If you’re looking to upgrade to a 1-bedroom apartment you’ll pay around $632, while a cheap 2-bedroom apartment will cost you about $725 per month.