Comparison to Surrounding Areas
The median household income ($82,917) for 57233 is less than the median household income for 57248 ($96,364) and Erwin town ($86,250). But it's more than 57221 ($73,988), 57231 ($78,646), 57249 ($63,182), and Kingsbury County ($74,000).
| 57233 | $82,917 |
| Erwin town | $86,250 |
| Kingsbury County | $74,000 |
Get Median Household Income for all Zip Codes in South Dakota.
The average household income ($102,846) for 57233 is less than the average household income for 57221 ($125,017). But it's more than 57231 ($96,356), 57248 ($101,704), 57249 ($80,758), Kingsbury County ($88,285), and Erwin town ($75,677).
| 57233 | $102,846 |
| Erwin town | $75,677 |
| Kingsbury County | $88,285 |
Get Average Household Income for all Zip Codes in South Dakota.
The per-capita income for 57233 is $18,478. The per capita income ($18,478) for 57233 is less than 57221 ($42,426), 57231 ($41,058), 57248 ($34,650), 57249 ($37,442), Kingsbury County ($37,027), and Erwin town ($19,630).
| 57233 | $18,478 |
| Erwin town | $19,630 |
| Kingsbury County | $37,027 |
Get Per-Capita Income for all Zip Codes in South Dakota.
21.1% of households make over $200,000 a year. The percent high income households (21.1%) for 57233 is more than 57221 (12.9%), 57231 (7.6%), 57248 (4.2%), 57249 (5.2%), Kingsbury County (5.7%), and Erwin town (0.0%).
| 57233 | 21.1% |
| Erwin town | 0.0% |
| Kingsbury County | 5.7% |
Get High Income Households for all Zip Codes in South Dakota.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 57233 | $-1 | $74,219 | $208,125 | $60,000 |
| Erwin town | $-1 | $97,500 | $84,167 | $50,000 |
| Kingsbury County | $55,521 | $79,524 | $102,546 | $52,353 |
Get Median Household Income by Age of Householder for all Zip Codes in South Dakota.
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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 57233 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+ | |||||
| 57233 | +/-$16,049 | +/-$29,204 | +/-$4,248 | +/-20.7% | +/-$-1 | +/-$15,745 | +/-$122,424 | +/-$24,787 |
| Erwin town | +/-$7,972 | +/-$11,598 | +/-$8,152 | +/-55.5% | +/-$-1 | +/-$26,374 | +/-$12,378 | +/-$29,376 |
| Kingsbury County | +/-$6,554 | +/-$4,741 | +/-$1,685 | +/-1.6% | +/-$7,435 | +/-$11,855 | +/-$12,452 | +/-$10,837 |