Ill. Admin. Code tit. 89, § 148.TABLE C
"SMSA" means Standard Metropolitan Statistical Area as defined by the U.S. Office of Management and Budget (OMB).
| Boone | Champaign | Clinton | Cook | DuPage |
| Henry | Kane | Kankakee | Lake | Macon |
| Madison | McHenry | McLean | Menard | Monroe |
| Peoria | Rock Island | Sangamon | St. Clair | Tazewell |
| Will | Winnebago | Woodford |
(Source: Amended at 38 Ill. Reg. 15165, effective July 2, 2014)