100 Smallest ZIP Codes in the United States by Population in Harrison 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 Harrison County, Iowa.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 51550 | MAGNOLIA | IA | 137 |
| 2 | 51545 | LITTLE SIOUX | IA | 271 |
| 3 | 51556 | MODALE | IA | 359 |
| 4 | 51564 | PISGAH | IA | 479 |
| 5 | 51563 | PERSIA | IA | 737 |
| 6 | 51557 | MONDAMIN | IA | 834 |
| 7 | 51529 | DUNLAP | IA | 1,992 |
| 8 | 51579 | WOODBINE | IA | 2,116 |
| 9 | 51546 | LOGAN | IA | 3,067 |
| 10 | 51555 | MISSOURI VALLEY | IA | 4,858 |