| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Eureka | Standard | $474,070 |
| Green Valley | Standard | $328,200 |
| Groveland | Standard | $383,520 |
| Manito | Standard | $301,680 |
| Morton | Standard | $491,390 |
| Pekin | Standard | $364,760 |
| Tremont | Standard | $526,710 |
| Washington | Standard | $380,430 |
| Creve Coeur | Standard | $141,750 |
| East Peoria | Standard | $398,010 |
| Armington | Standard | $169,430 |
| Danvers | Standard | $323,060 |
| Deer Creek | Standard | $362,800 |
| Delavan | Standard | $394,600 |
| Goodfield | Standard | $379,700 |
| Hopedale | Standard | $295,680 |
| Mackinaw | Standard | $310,280 |
| Minier | Standard | $424,350 |
Source: US Internal Revenue Service