Founded in 1830, McLean County is one of 102 counties in the state of Illinois. Historically, McLean County was formed from Tazewell County. The city of Bloomington is the county seat. With FIPS code of 113, McLean County has a population of 170,889 and area of 1,183 square miles (3,064 km2).
List of all cities in McLean County, IL alphabetically
| City/Town | Postal Code | Area Code |
| Allin, IL | 61774 | 309 |
| Anchor, IL | 61720 | 309 |
| Arrowsmith, IL | 61722 | 309 |
| Barnes, IL | 61701 | 309 |
| Bellflower, IL | 61724 | 309 |
| BLM, IL | 61702 | 309 |
| 61704 | 309 | |
| Bloomington, IL | 61701 | 309 |
| 61702 | 309 | |
| 61704 | 309 | |
| 61705 | 309 | |
| 61709 | 309 | |
| 61710 | 309 | |
| 61791 | 309 | |
| 61799 | 309 | |
| Bloomington Heights, IL | 61701 | 309 |
| Bloomington Normal Airport, IL | 61701 | 309 |
| Carlock, IL | 61725 | 309 |
| Chenoa, IL | 61726 | 815/779 |
| Colfax, IL | 61728 | 309 |
| College Hills Mall, IL | 61761 | 309 |
| Cooksville, IL | 61730 | 309 |
| Covell, IL | 61704 | 309 |
| Cropsey, IL | 61731 | 309 |
| Danvers, IL | 61732 | 309 |
| Dawson Township, IL | 61737 | 309 |
| Downs, IL | 61736 | 309 |
| Eastland Commons, IL | 61701 | 309 |
| Eastland Shopping Center, IL | 61701 | 309 |
| Ellsworth, IL | 61737 | 309 |
| Fletcher, IL | 61701 | 309 |
| Funks Grove, IL | 61754 | 309 |
| Gillum, IL | 61701 | 309 |
| Glen Avon, IL | 61724 | 309 |
| Gridley, IL | 61744 | 309 |
| Heyworth, IL | 61745 | 309 |
| Hilltop, IL | 61753 | 309 |
| Holder, IL | 61736 | 309 |
| Hudson, IL | 61748 | 309 |
| Illinois State University, IL | 61790 | 309 |
| Internal Revenue Service, IL | 61799 | 309 |
| Kerrik, IL | 61701 | 309 |
| Kumler, IL | 61724 | 309 |
| Leroy, IL | 61752 | 309 |
| Lexington, IL | 61753 | 309 |
| Lyttleville, IL | 61745 | 309 |
| McLean, IL | 61754 | 309 |
| Meadows, IL | 61726 | 815/779 |
| Merna, IL | 61758 | 309 |
| 61761 | 309 | |
| Money Creek, IL | 61753 | 309 |
| Normal, IL | 61761 | 309 |
| 61790 | 309 | |
| Oldtown, IL | 61701 | 309 |
| Padua, IL | 61737 | 309 |
| Randolph, IL | 61745 | 309 |
| Sabina, IL | 61722 | 309 |
| Saybrook, IL | 61770 | 309 |
| Shirley, IL | 61772 | 309 |
| Stanford, IL | 61774 | 309 |
| State Farm Ins Il Region Ofc, IL | 61709 | 309 |
| State Farm Plaza, IL | 61710 | 309 |
| 61791 | 309 | |
| Towanda, IL | 61776 | 309 |
| Waldo, IL | 61744 | 309 |
| West, IL | 61722 | 309 |
| Weston, IL | 61726 | 815/779 |
| Yates, IL | 61726 | 815/779 |
| Yuton, IL | 61701 | 309 |