| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Arlington | Standard | $140,330 |
| Colesburg | Standard | $161,250 |
| Edgewood | Standard | $541,550 |
| Elkader | Standard | $620,600 |
| Farmersburg | Standard | $154,240 |
| Garber | Standard | $176,200 |
| Garnavillo | Standard | $554,250 |
| Greeley | Standard | $141,550 |
| Guttenberg | Standard | $413,050 |
| Holy Cross | Standard | $165,200 |
| Saint Olaf | Standard | $159,630 |
| Sherrill | Standard | $321,530 |
| Strawberry Point | Standard | $447,500 |
| Volga | Standard | $122,600 |
| Elgin | Standard | $178,230 |
| Luana | Standard | $187,740 |
| McGregor | Standard | $167,240 |
| Monona | Standard | $376,500 |
| Postville | Standard | $395,000 |
| Wadena | Standard | $125,770 |
Source: US Internal Revenue Service