The natural range in Florida appears to include the entire mainland and exclude the Florida keys.  Herbarium specimen in the Florida Keys was in a man-made pond leading to the suspicion that the plant was brought in by man and that the keys are not within the natural range of the species. The counties where the plant has not been documented are well within the range of the species and have ample habitats to support this common species (this author has seen it in most of those counties). Wetland gardens and pond edges. Used in wetland restoration.

The range of shortleaf pine extends north into New Jersey and Pennsylvania (maybe further north), and west into Texas and Oklahoma.  It has some oddities in the BONAP maps that suggest that it has been poorly documented with herbarium specimens in Georgia.  Based on what we know from BONAP and ISB, the range in north Florida is likely continuous, but likely  does not extend down to the Gulf Coast.  Given land uses, it may once of been more frequent and included counties from which there are no herbarium specimens.  This pine has been used commercially for timber production, especially north of Florida.  Overall, it appears appropriate to plant this species in appropriate soil conditions anywhere in the Florida panhandle and east to Columbia County. Shade tree. Forest tree.