This table ranks all 24 ZIP codes in the Mankato, MN MSA by estimated 2022 population, from highest to lowest.
| # | ZIP Code | Place Name | Population (2022) |
|---|---|---|---|
| 1 | ZIP 56001 | Mankato | 50,524 |
| 2 | ZIP 56073 | New Ulm | 17,418 |
| 3 | ZIP 56003 | Mankato | 15,360 |
| 4 | ZIP 56082 | Saint Peter | 14,544 |
| 5 | ZIP 56058 | Le Sueur | 6,087 |
| 6 | ZIP 56048 | Janesville | 4,267 |
| 7 | ZIP 56055 | Lake Crystal | 3,844 |
| 8 | ZIP 56024 | Eagle Lake | 3,559 |
| 9 | ZIP 56062 | Madelia | 3,307 |
| 10 | ZIP 56063 | Madison Lake | 3,062 |
| 11 | ZIP 56065 | Mapleton | 2,802 |
| 12 | ZIP 56088 | Truman | 2,062 |
| 13 | ZIP 55332 | Fairfax | 1,752 |
| 14 | ZIP 56074 | Nicollet | 1,716 |
| 15 | ZIP 55335 | Gibbon | 1,617 |
| 16 | ZIP 56037 | Good Thunder | 1,509 |
| 17 | ZIP 56021 | Courtland | 1,091 |
| 18 | ZIP 56010 | Amboy | 1,058 |
| 19 | ZIP 56054 | Lafayette | 1,005 |
| 20 | ZIP 56068 | Minnesota Lake | 984 |
| 21 | ZIP 56080 | Saint Clair | 762 |
| 22 | ZIP 56090 | Vernon Center | 610 |
| 23 | ZIP 56078 | Pemberton | 490 |
| 24 | ZIP 56034 | Garden City | 384 |