According to
http://www.rcid.org/ (Reedy Creek Improvement District official website)
Disney has used:
Residential - 11 acres .04 %
Retail/ Restaurant - 145 acres 0.58%
Office Space - 50 acres 0.20%
Other Comercial - 49 acres 0.20%
Resort Hotels - 1,842 acres 7.39%
Campgrounds - 277 acres 1.11%
Golf Courses - 940 acres 3.77%
Major Theme Parks - 1,692 acres 6.79%
(Magic Kingdom, Epcot, Disney/MGM Studios, Animal Kingdom)
Minor Theme Parks - 341 acres 1.37%
(Blizzard Beach, Typhoon Lagoon, River Country, Disney Speedway, Discovery Island, Wide World of Sports)
Other Entertainment - 204 acres 0.82%
Support Facilities - 689 acres 2.76%
Roads - 1,565 acres 6.28%
Other Public Facilities - 867 acres 3.48%
Agriculture - 1,012 acres 4.06%
Undeveloped Open Space - 6,096 acres 24.46%
Conservation - 7,617 acres 30.56%
Water Bodies - 1,527 acres 6.13%
(Reedy Creek Swamp, Bay Lake, Seven Seas Lagoon, World Showcase Lagoon, Village Lake, Lake Buena Vista, Club Lake)
TOTAL 24,924 acres 100.0%
Above does not include areas removed from RCID (Town of Celebration, Disney Wildlife Preserve)
Hope this helps! :sohappy: