Comparison to Surrounding Areas
The median household income ($81,205) for 51108 is less than the median household income for 51024 ($114,219), 51030 ($86,167), and Plymouth County ($83,251). But it's more than 51104 ($75,362), 51106 ($78,434), 51109 ($79,034), 51103 ($58,197), 51105 ($51,786), Woodbury County ($73,658), and Sioux City city ($68,906).
| 51108 | $81,205 |
| Sioux City city | $68,906 |
| Plymouth County | $83,251 |
| Woodbury County | $73,658 |
Get Median Household Income for all Zip Codes in Iowa.
The average household income ($104,784) for 51108 is less than the average household income for 51024 ($121,897) and 51030 ($109,580). But it's more than 51109 ($89,743), 51104 ($93,231), 51105 ($66,882), 51106 ($97,990), 51103 ($72,702), Woodbury County ($90,682), Plymouth County ($101,116), and Sioux City city ($86,214).
| 51108 | $104,784 |
| Sioux City city | $86,214 |
| Plymouth County | $101,116 |
| Woodbury County | $90,682 |
Get Average Household Income for all Zip Codes in Iowa.
The per-capita income for 51108 is $38,642. The per capita income ($38,642) for 51108 is less than the per capita income for 51024 ($48,658), 51030 ($44,803), 51106 ($39,145), and Plymouth County ($41,532). But it's more than 51103 ($27,717), 51104 ($36,752), 51105 ($24,008), 51109 ($37,934), Woodbury County ($35,564), and Sioux City city ($33,795).
| 51108 | $38,642 |
| Sioux City city | $33,795 |
| Plymouth County | $41,532 |
| Woodbury County | $35,564 |
Get Per-Capita Income for all Zip Codes in Iowa.
10.3% of households make over $200,000 a year. The percent high income households (10.3%) for 51108 is less than the percent high income households for 51030 (11.0%) and 51106 (11.0%). But it's more than 51109 (3.2%), 51103 (2.3%), 51104 (5.2%), 51105 (3.4%), 51024 (9.5%), Woodbury County (7.0%), Plymouth County (7.6%), and Sioux City city (6.1%).
| 51108 | 10.3% |
| Sioux City city | 6.1% |
| Plymouth County | 7.6% |
| 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 | |
|---|---|---|---|---|
| 51108 | $-1 | $95,813 | $103,911 | $49,775 |
| Sioux City city | $55,069 | $77,969 | $86,547 | $46,909 |
| Plymouth County | $53,250 | $92,702 | $102,267 | $56,204 |
| 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 51108 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+ | |||||
| 51108 | +/-$15,585 | +/-$17,931 | +/-$7,719 | +/-3.5% | +/-$-1 | +/-$24,702 | +/-$48,625 | +/-$7,480 |
| Sioux City city | +/-$4,550 | +/-$3,658 | +/-$1,388 | +/-1.4% | +/-$15,963 | +/-$4,262 | +/-$6,439 | +/-$2,666 |
| Plymouth County | +/-$4,100 | +/-$4,760 | +/-$1,940 | +/-1.2% | +/-$8,054 | +/-$6,730 | +/-$10,727 | +/-$5,836 |
| Woodbury County | +/-$2,611 | +/-$2,937 | +/-$1,120 | +/-1.2% | +/-$13,152 | +/-$5,067 | +/-$6,529 | +/-$3,089 |