Winneshiek County, Iowa ZIP Codes
- ZIP records
7 - Cities represented
7 - Sum of listed ZIP population estimates
19,199
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 52101 | Decorah | 12,706 |
| 2 | 52132 | Calmar | 1,759 |
| 3 | 52161 | Ossian | 1,532 |
| 4 | 52165 | Ridgeway | 1,098 |
| 5 | 52144 | Fort Atkinson | 1,075 |
| 6 | 52133 | Castalia | 673 |
| 7 | 52168 | Spillville | 356 |
Cities in Winneshiek County
ZIP Directory
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.