Mississippi recommends 500 bluegill per acre:

http://msucares.com/pubs/publications/p2525.pdf

North Carolina recommends 700 in a fertilized pond (half that many for unfertilized):

http://www.ces.ncsu.edu/nreos/wild/fisheries/mgt_guide/chapter2.html#options

Georgia recommends 400 per acre:

http://warnell.forestry.uga.edu/service/library/index.php3?docID=41&docHistory%5B%5D=1

Tennessee recommends 500:

http://www.tnfish.org/FarmPondManagement_TWRA/files/TWRAPondManagement.pdf

Arkansas recommends 800 for a fertilized pond, half that many for unfertilized:

http://www.tnfish.org/FarmPondManagement_TWRA/files/TWRAPondManagement.pdf

Florida recommends between 250 and 500:

http://myfwc.com/conservation/conservationyou_daily_living_pond_management.htm#fish


LA, SC, AL, and TX recommend 1,000 per acre for a fertilized pond.