| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Rock Island | Standard | $461,960 |
| Andalusia | Standard | $406,600 |
| Carbon Cliff | Standard | $133,330 |
| Coal Valley | Standard | $374,250 |
| Cordova | Standard | $589,680 |
| East Moline | Standard | $357,600 |
| Hampton | Standard | $374,270 |
| Hillsdale | Standard | $171,990 |
| Illinois City | Standard | $267,650 |
| Milan | Standard | $410,790 |
| Moline | Standard | $472,160 |
| Orion | Standard | $315,130 |
| Port Byron | Standard | $509,800 |
| Reynolds | Standard | $199,780 |
| Sherrard | Standard | $331,850 |
| Silvis | Standard | $323,340 |
| Taylor Ridge | Standard | $345,510 |
Source: US Internal Revenue Service