| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2020) |
|---|
| Bear | Standard | $74,750 |
| Newark | Standard | $65,510 |
| Claymont | Standard | $60,830 |
| Hockessin | Standard | $148,880 |
| Middletown | Standard | $92,140 |
| Newark | Standard | $91,550 |
| Newark | Standard | $54,270 |
| New Castle | Standard | $50,220 |
| Townsend | Standard | $77,820 |
| Yorklyn | Standard | $151,440 |
| Wilmington | Standard | $61,130 |
| Wilmington | Standard | $44,170 |
| Wilmington | Standard | $124,580 |
| Wilmington | Standard | $51,220 |
| Wilmington | Standard | $44,700 |
| Wilmington | Standard | $139,160 |
| Wilmington | Standard | $374,680 |
| Wilmington | Standard | $76,800 |
| Wilmington | Standard | $66,790 |
| Wilmington | Standard | $94,930 |
| Clayton | Standard | $66,570 |
| Smyrna | Standard | $60,780 |
Source: US Internal Revenue Service