Cheap Apartments For Rent In The Florida Keys . The average home rent in this town is $4,579. The average apartment rent in key west will cost you $3,513. Apartment For Rent In Key West Florida PRFRTY from prfrty.blogspot.com 5 rows the average home rent in this town is $3,513. Start your free search for cheap apartments today. The median rent for the city is $1,295 a month.