Ill. Admin. Code tit. 68, § 1290.20
a) To geographically disperse 60 dispensing organizations throughout the State, the following Dispensing Organization Districts are created with the accompanying allocation of registrations.
1) That part of the State, outside of the Chicago metropolitan area, shall be allocated 22 registrations as follows:
2) That part of the State within the Chicago metropolitan area but outside of Cook County shall be allocated 14 registrations as follows:
3) That part of Cook County outside of the City of Chicago shall be allocated 11 registrations as follows:
4) The City of Chicago shall be allocated 13 registrations as follows: