| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Anthon | Standard | $181,650 |
| Battle Creek | Standard | $178,510 |
| Bronson | Standard | $173,130 |
| Correctionville | Standard | $490,150 |
| Cushing | Standard | $138,230 |
| Danbury | Standard | $211,340 |
| Hornick | Standard | $221,480 |
| Kingsley | Standard | $327,140 |
| Lawton | Standard | $316,720 |
| Mapleton | Standard | $378,170 |
| Moville | Standard | $416,220 |
| Pierson | Standard | $223,780 |
| Salix | Standard | $342,100 |
| Sergeant Bluff | Standard | $361,780 |
| Sloan | Standard | $356,400 |
| Smithland | Standard | $153,550 |
| Sioux City | Standard | $240,180 |
| Sioux City | Standard | $294,700 |
| Sioux City | Standard | $519,210 |
| Sioux City | Standard | $133,570 |
| Sioux City | Standard | $516,350 |
| Sioux City | Standard | $590,090 |
| Sioux City | Standard | $155,740 |
Source: US Internal Revenue Service