Comparison to Surrounding Areas
The median household income ($58,197) for 51103 is less than the median household income for 51106 ($78,434), 51109 ($79,034), 68776 ($68,750), 51104 ($75,362), 51108 ($81,205), Woodbury County ($73,658), and Sioux City city ($68,906). But it's more than 51101 ($15,300) and 51105 ($51,786).
| 51103 | $58,197 |
| Sioux City city | $68,906 |
| Woodbury County | $73,658 |
Get Median Household Income for all Zip Codes in Iowa.
The average household income ($72,702) for 51103 is less than the average household income for 51106 ($97,990), 51109 ($89,743), 68776 ($89,732), 51104 ($93,231), 51108 ($104,784), Woodbury County ($90,682), and Sioux City city ($86,214). But it's more than 51101 ($30,200) and 51105 ($66,882).
| 51103 | $72,702 |
| Sioux City city | $86,214 |
| Woodbury County | $90,682 |
Get Average Household Income for all Zip Codes in Iowa.
The per-capita income for 51103 is $27,717. The per capita income ($27,717) for 51103 is less than the per capita income for 51106 ($39,145), 51109 ($37,934), 68776 ($31,725), 51104 ($36,752), 51108 ($38,642), Woodbury County ($35,564), and Sioux City city ($33,795). But it's more than 51101 ($21,580) and 51105 ($24,008).
| 51103 | $27,717 |
| Sioux City city | $33,795 |
| Woodbury County | $35,564 |
Get Per-Capita Income for all Zip Codes in Iowa.
2.3% of households make over $200,000 a year. The percent high income households (2.3%) for 51103 is less than the percent high income households for 68776 (3.5%), 51108 (10.3%), 51109 (3.2%), 51104 (5.2%), 51105 (3.4%), 51106 (11.0%), Woodbury County (7.0%), and Sioux City city (6.1%). But it's more than 51101 (0.0%).
| 51103 | 2.3% |
| Sioux City city | 6.1% |
| Woodbury County | 7.0% |
Get High Income Households for all Zip Codes in Iowa.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 51103 | $80,593 | $75,420 | $60,127 | $30,781 |
| Sioux City city | $55,069 | $77,969 | $86,547 | $46,909 |
| Woodbury County | $55,368 | $81,268 | $88,314 | $50,680 |
Get Median Household Income by Age of Householder for all Zip Codes in Iowa.
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All income statistics above are the most current, comparable income statistics available from the US Census Bureau and are from the American Community Survey 2024 5-year estimates. You can find this information and other demographics for 51103 on the US Census Bureau’s website. These values are in 2024 inflation-adjusted dollars and were downloaded on 29 January 2026.
Margins of error for the income data are:
| Median Household Income | Average Household Income | Per Capita Income | High Income Households | Median Household Income by Age of Householder | ||||
|---|---|---|---|---|---|---|---|---|
| under 25 | 25 to 44 | 45 to 64 | 65+ | |||||
| 51103 | +/-$5,883 | +/-$6,284 | +/-$2,052 | +/-1.1% | +/-$17,699 | +/-$7,745 | +/-$13,429 | +/-$10,727 |
| Sioux City city | +/-$4,550 | +/-$3,658 | +/-$1,388 | +/-1.4% | +/-$15,963 | +/-$4,262 | +/-$6,439 | +/-$2,666 |
| Woodbury County | +/-$2,611 | +/-$2,937 | +/-$1,120 | +/-1.2% | +/-$13,152 | +/-$5,067 | +/-$6,529 | +/-$3,089 |