Comparison to Surrounding Areas
The median household income ($250,001) for 57640 is more than 57620 ($90,500), 57638 ($58,533), 57649 ($84,500), 58639 ($63,636), 58649 ($68,839), and Perkins County ($66,908).
| 57640 | $250,001 |
| Perkins County | $66,908 |
Get Median Household Income for all Zip Codes in South Dakota.
The average household income ($847,387) for 57640 is more than 57620 ($103,186), 57638 ($70,891), 57649 ($147,625), 58639 ($79,614), 58649 ($79,832), and Perkins County ($105,323).
| 57640 | $847,387 |
| Perkins County | $105,323 |
Get Average Household Income for all Zip Codes in South Dakota.
The per-capita income for 57640 is $622,346. The per capita income ($622,346) for 57640 is more than 57620 ($43,062), 57638 ($31,681), 57649 ($52,166), 58639 ($38,670), 58649 ($35,597), and Perkins County ($46,783).
| 57640 | $622,346 |
| Perkins County | $46,783 |
Get Per-Capita Income for all Zip Codes in South Dakota.
66.7% of households make over $200,000 a year. The percent high income households (66.7%) for 57640 is more than 57620 (8.6%), 57638 (2.8%), 57649 (32.0%), 58639 (5.6%), 58649 (4.0%), and Perkins County (8.4%).
| 57640 | 66.7% |
| Perkins County | 8.4% |
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 | |
|---|---|---|---|---|
| 57640 | $-1 | $-1 | $250,001 | $-1 |
| Perkins County | $42,250 | $63,500 | $91,083 | $65,750 |
Get Median Household Income by Age of Householder for all Zip Codes in South Dakota.
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All income statistics above are the most current, comparable income statistics available from the US Census Bureau and are from the American Community Survey 2024 5-year estimates. You can find this information and other demographics for 57640 on the US Census Bureau’s website. These values are in 2024 inflation-adjusted dollars and were downloaded on 29 January 2026.
Margins of error for the income data are:
| Median Household Income | Average Household Income | Per Capita Income | High Income Households | Median Household Income by Age of Householder | ||||
|---|---|---|---|---|---|---|---|---|
| under 25 | 25 to 44 | 45 to 64 | 65+ | |||||
| 57640 | +/-$-1 | +/-$485,022 | +/-$506,102 | +/-42.4% | +/-$-1 | +/-$-1 | +/-$-1 | +/-$-1 |
| Perkins County | +/-$9,644 | +/-$25,019 | +/-$11,017 | +/-3.5% | +/-$19,485 | +/-$12,840 | +/-$17,438 | +/-$15,285 |