100 Smallest ZIP Codes in the United States by Population in Louisa County, Iowa
Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Louisa County, Iowa.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 52737 | COLUMBUS CITY | IA | 274 |
| 2 | 52646 | OAKVILLE | IA | 293 |
| 3 | 52752 | GRANDVIEW | IA | 364 |
| 4 | 52640 | MORNING SUN | IA | 1,366 |
| 5 | 52754 | LETTS | IA | 1,501 |
| 6 | 52653 | WAPELLO | IA | 3,109 |
| 7 | 52738 | COLUMBUS JUNCTION | IA | 3,389 |