Big Coppitt Key is a census-designated place and an unincorporated community in Monroe County, Florida, on an island of the same name in the lower Florida Keys. As of the 2000 census, the town had a total population of 2,595. The name is said to be a derivation of the old English word 'coppice', meaning thicket. According to A.D. Bache, in the notes for his coast survey conducted in 1861, this key was the location of Happy Jack's plantation in 1855. Big Coppitt Key apartments for rent comparison page shows most up to date rent information on Big Coppitt Key apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.