100 Smallest ZIP Codes in the United States by Population in Johnson 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 Johnson County, Iowa.
| Rank | ZIP Code | City | State | Population |
|---|---|---|---|---|
| 1 | 52235 | HILLS | IA | 889 |
| 2 | 52322 | OXFORD | IA | 1,913 |
| 3 | 52755 | LONE TREE | IA | 2,227 |
| 4 | 52338 | SWISHER | IA | 3,886 |
| 5 | 52242 | IOWA CITY | IA | 4,140 |
| 6 | 52340 | TIFFIN | IA | 5,192 |
| 7 | 52333 | SOLON | IA | 7,237 |
| 8 | 52245 | IOWA CITY | IA | 22,088 |
| 9 | 52317 | NORTH LIBERTY | IA | 22,119 |
| 10 | 52246 | IOWA CITY | IA | 22,340 |
| 11 | 52241 | CORALVILLE | IA | 22,494 |
| 12 | 52240 | IOWA CITY | IA | 36,475 |