24 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 61761 | Normal | 53,404 |
| 61704 | Bloomington | 36,938 |
| 61701 | Bloomington | 35,577 |
| 61705 | Bloomington | 12,973 |
| 61745 | Heyworth | 4,506 |
| 61752 | Le Roy | 4,404 |
| 61753 | Lexington | 3,087 |
| 61726 | Chenoa | 2,728 |
| 61736 | Downs | 2,658 |
| 61748 | Hudson | 2,612 |
| 61732 | Danvers | 2,089 |
| 61744 | Gridley | 1,917 |
| 61728 | Colfax | 1,316 |
| 61776 | Towanda | 1,208 |
| 61754 | McLean | 1,158 |
| 61770 | Saybrook | 1,081 |
| 61774 | Stanford | 764 |
| 61722 | Arrowsmith | 612 |
| 61724 | Bellflower | 493 |
| 61737 | Ellsworth | 449 |
| 61730 | Cooksville | 431 |
| 61720 | Anchor | 347 |
| 61772 | Shirley | 221 |
| 61731 | Cropsey | 134 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 24 ZCTAs in McLean County, Illinois (US Census).