A little math....
There are 7.9 billion people on earth...but we'll say 8 billion....
The State of Alaska is 365,000,000 acres.....
1 acre is 4840 square yards
Each person would get .0456th of an acre which is 221.4 square yards....
which is 1992.6 square feet.
Based on the national family and house-size averages, it could be estimated that about 1000 square feet per person should be calculated.
Something to think about!