Comparison to Surrounding Areas
The median household income ($57,813) for 57521 is less than the median household income for 57547 ($78,523), 57552 ($63,500), and 57567 ($59,410). But it's more than 57579 ($56,474), 57543 ($36,250), 57560 ($-1), 57562 ($-1), Jackson County ($35,417), Mellette County ($54,076), Belvidere town ($50,469), and Corn Creek CDP ($2,499).
| 57521 | $57,813 |
| Belvidere town | $50,469 |
| Corn Creek CDP | $2,499 |
| Jackson County | $35,417 |
| Mellette County | $54,076 |
Get Median Household Income for all Zip Codes in South Dakota.
The average household income ($120,195) for 57521 is less than the average household income for 57562 ($135,312). But it's more than 57579 ($72,302), 57547 ($107,132), 57552 ($89,364), 57560 ($21,587), 57567 ($81,455), 57543 ($51,714), Mellette County ($74,230), Jackson County ($52,743), Belvidere town ($51,221), and Corn Creek CDP ($10,563).
| 57521 | $120,195 |
| Belvidere town | $51,221 |
| Corn Creek CDP | $10,563 |
| Jackson County | $52,743 |
| Mellette County | $74,230 |
Get Average Household Income for all Zip Codes in South Dakota.
The per-capita income for 57521 is $28,092. The per capita income ($28,092) for 57521 is less than the per capita income for 57547 ($35,699), 57552 ($41,384), 57562 ($37,146), and 57567 ($32,450). But it's more than 57560 ($8,181), 57579 ($24,075), 57543 ($24,528), Mellette County ($25,614), Jackson County ($18,066), Corn Creek CDP ($1,687), and Belvidere town ($9,606).
| 57521 | $28,092 |
| Belvidere town | $9,606 |
| Corn Creek CDP | $1,687 |
| Jackson County | $18,066 |
| Mellette County | $25,614 |
Get Per-Capita Income for all Zip Codes in South Dakota.
18.5% of households make over $200,000 a year. The percent high income households (18.5%) for 57521 is less than the percent high income households for 57562 (47.1%). But it's more than 57579 (5.6%), 57547 (10.8%), 57552 (8.8%), 57560 (0.0%), 57567 (3.5%), 57543 (0.0%), Mellette County (9.2%), Jackson County (1.4%), Belvidere town (0.0%), and Corn Creek CDP (0.0%).
| 57521 | 18.5% |
| Belvidere town | 0.0% |
| Corn Creek CDP | 0.0% |
| Jackson County | 1.4% |
| Mellette County | 9.2% |
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 | |
|---|---|---|---|---|
| 57521 | $-1 | $-1 | $50,938 | $-1 |
| Belvidere town | $-1 | $-1 | $50,938 | $-1 |
| Corn Creek CDP | $-1 | $-1 | $-1 | $-1 |
| Jackson County | $-1 | $55,833 | $41,500 | $21,808 |
| Mellette County | $-1 | $39,265 | $51,250 | $58,750 |
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 57521 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+ | |||||
| 57521 | +/-$22,665 | +/-$98,766 | +/-$24,155 | +/-24.6% | +/-$-1 | +/-$-1 | +/-$6,794 | +/-$-1 |
| Belvidere town | +/-$1,906 | +/-$7,251 | +/-$6,089 | +/-59.7% | +/-$-1 | +/-$-1 | +/-$6,794 | +/-$-1 |
| Corn Creek CDP | +/-$-1 | +/-$12,205 | +/-$2,055 | +/-59.7% | +/-$-1 | +/-$-1 | +/-$-1 | +/-$-1 |
| Jackson County | +/-$21,129 | +/-$9,362 | +/-$3,605 | +/-2.4% | +/-$-1 | +/-$3,026 | +/-$26,697 | +/-$1,469 |
| Mellette County | +/-$8,231 | +/-$13,653 | +/-$5,232 | +/-5.9% | +/-$-1 | +/-$23,448 | +/-$13,317 | +/-$7,788 |