| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Barrington | Standard | $888,470 |
| Algonquin | Standard | $347,070 |
| Carpentersville | Standard | $316,380 |
| Dundee | Standard | $417,470 |
| Elburn | Standard | $449,250 |
| Elgin | Standard | $339,520 |
| Elgin | Standard | $330,530 |
| Elgin | Standard | $405,560 |
| Geneva | Standard | $461,360 |
| Gilberts | Standard | $325,650 |
| Hampshire | Standard | $373,710 |
| Huntley | Standard | $354,760 |
| Maple Park | Standard | $377,290 |
| Saint Charles | Standard | $685,460 |
| Saint Charles | Standard | $548,090 |
| South Elgin | Standard | $355,770 |
| Sycamore | Standard | $446,170 |
| Wayne | Standard | $900,100 |
| Aurora | Standard | $404,460 |
| Aurora | Standard | $333,410 |
| Aurora | Standard | $338,020 |
| Aurora | Standard | $372,640 |
| Batavia | Standard | $451,390 |
| Big Rock | Standard | $639,490 |
| Hinckley | Standard | $340,540 |
| Montgomery | Standard | $407,860 |
| North Aurora | Standard | $325,810 |
| Sugar Grove | Standard | $411,630 |
Source: US Internal Revenue Service