ZIP codes starting with 521
Where is ZIP code prefix 521?
Decorah, Iowa
33 active ZIP codes, from 52101 to 52175
| ZIP code | City | County | Type | Population |
|---|---|---|---|---|
| 52101 | Decorah, IA | Winneshiek County | Standard | 12,706 |
| 52132 | Calmar, IA | Winneshiek County | Standard | 1,759 |
| 52133 | Castalia, IA | Winneshiek County | Standard | 673 |
| 52134 | Chester, IA | Howard County | Standard | 223 |
| 52135 | Clermont, IA | Fayette County | Standard | 834 |
| 52136 | Cresco, IA | Howard County | Standard | 5,840 |
| 52140 | Dorchester, IA | Allamakee County | Standard | 671 |
| 52141 | Elgin, IA | Fayette County | Standard | 1,259 |
| 52142 | Fayette, IA | Fayette County | Standard | 1,890 |
| 52144 | Fort Atkinson, IA | Winneshiek County | Standard | 1,075 |
| 52146 | Harpers Ferry, IA | Allamakee County | Standard | 752 |
| 52147 | Hawkeye, IA | Fayette County | Standard | 911 |
| 52149 | Highlandville, IA | Winneshiek County | PO Box only | – |
| 52151 | Lansing, IA | Allamakee County | Standard | 1,886 |
| 52154 | Lawler, IA | Chickasaw County | Standard | 592 |
| 52155 | Lime Springs, IA | Howard County | Standard | 1,110 |
| 52156 | Luana, IA | Clayton County | Standard | 769 |
| 52157 | Mc Gregor, IA | Clayton County | Standard | 1,451 |
| 52158 | Marquette, IA | Clayton County | PO Box only | 290 |
| 52159 | Monona, IA | Clayton County | Standard | 2,398 |
| 52160 | New Albin, IA | Allamakee County | Standard | 818 |
| 52161 | Ossian, IA | Winneshiek County | Standard | 1,532 |
| 52162 | Postville, IA | Allamakee County | Standard | 3,744 |
| 52163 | Protivin, IA | Howard County | PO Box only | 333 |
| 52164 | Randalia, IA | Fayette County | Standard | 187 |
| 52165 | Ridgeway, IA | Winneshiek County | Standard | 1,098 |
| 52166 | Saint Lucas, IA | Fayette County | PO Box only | 137 |
| 52168 | Spillville, IA | Winneshiek County | PO Box only | 356 |
| 52169 | Wadena, IA | Fayette County | Standard | 367 |
| 52170 | Waterville, IA | Allamakee County | Standard | 555 |
| 52171 | Waucoma, IA | Fayette County | Standard | 1,314 |
| 52172 | Waukon, IA | Allamakee County | Standard | 5,877 |
| 52175 | West Union, IA | Fayette County | Standard | 3,484 |
States
Questions
- Where are ZIP codes starting with 521?
- ZIP codes that start with 521 are in Iowa, mainly Decorah, Calmar and Castalia.
- How many ZIP codes start with 521?
- 33 active ZIP codes start with 521.