| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Elk Grove Village | Standard | $377,800 |
| Addison | Standard | $433,820 |
| Bartlett | Standard | $390,560 |
| Bensenville | Standard | $377,260 |
| Bloomingdale | Standard | $470,030 |
| Elgin | Standard | $339,520 |
| Elmhurst | Standard | $620,840 |
| Hanover Park | Standard | $321,480 |
| Glen Ellyn | Standard | $636,100 |
| Glendale Heights | Standard | $340,030 |
| Itasca | Standard | $453,450 |
| Lombard | Standard | $400,450 |
| Medinah | Standard | $528,050 |
| Roselle | Standard | $447,940 |
| Villa Park | Standard | $396,000 |
| Wayne | Standard | $900,100 |
| West Chicago | Standard | $440,280 |
| Wheaton | Standard | $604,380 |
| Carol Stream | Standard | $378,190 |
| Wheaton | Standard | $567,990 |
| Winfield | Standard | $423,010 |
| Wood Dale | Standard | $388,550 |
| Lemont | Standard | $546,640 |
| Aurora | Standard | $404,460 |
| Aurora | Standard | $333,410 |
| Clarendon Hills | Standard | $713,720 |
| Downers Grove | Standard | $566,880 |
| Downers Grove | Standard | $371,250 |
| Woodridge | Standard | $376,790 |
| Hinsdale | Standard | $1,272,300 |
| Oak Brook | Standard | $996,930 |
| Willowbrook | Standard | $803,880 |
| Lisle | Standard | $427,260 |
| Naperville | Standard | $600,610 |
| Warrenville | Standard | $532,760 |
| Westmont | Standard | $531,020 |
| Darien | Standard | $464,610 |
| Naperville | Standard | $517,720 |
| Naperville | Standard | $442,160 |
| Naperville | Standard | $450,950 |
Source: US Internal Revenue Service