Hi Eric:
The largest persimmon tree on record in Illinois is approximately 8.1 feet in circumference, 135 feet tall, with a crown spread of nearly 40 feet.
Location information must be supplied to the coordinator of the Illinois Big Tree Register; however, landowners reserve the right to withhold this information from the general public (i.e., I will not publish the location of your Big Tree if that is your wish).
The owners/nominators of certified Big Trees receive a printed Big Tree certificate and a tremendous amount of satisfaction and pride that they are now the owners/nominators of a new state champion tree.
Illinois Big Tree Register:
http://web.extension.illinois.edu/forestry/il_big_tree.html