100 Largest ZIP Codes in the United States by Population in Cass County, Iowa
Explore the 100 largest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Cass County, Iowa.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 50022 | ATLANTIC | IA | 8,664 |
| 2 | 51535 | GRISWOLD | IA | 1,730 |
| 3 | 50020 | ANITA | IA | 1,281 |
| 4 | 51544 | LEWIS | IA | 741 |
| 5 | 50853 | MASSENA | IA | 693 |
| 6 | 50843 | CUMBERLAND | IA | 487 |
| 7 | 51552 | MARNE | IA | 204 |
| 8 | 50274 | WIOTA | IA | 132 |