Comparison to Surrounding Areas
The median household income ($73,988) for 57221 is less than the median household income for 57241 ($85,833), 57231 ($78,646), 57233 ($82,917), 57271 ($85,524), 57242 ($113,958), 57248 ($96,364), and Hamlin County ($87,101). But it's more than 57278 ($70,208), Clark County ($70,726), and Bryant city ($62,000).
| 57221 | $73,988 |
| Bryant city | $62,000 |
| Clark County | $70,726 |
| Hamlin County | $87,101 |
Get Median Household Income for all Zip Codes in South Dakota.
The average household income ($125,017) for 57221 is less than the average household income for 57241 ($131,766). But it's more than 57278 ($92,047), 57242 ($106,231), 57248 ($101,704), 57271 ($85,213), 57231 ($96,356), 57233 ($102,846), Hamlin County ($109,883), Clark County ($90,733), and Bryant city ($78,446).
| 57221 | $125,017 |
| Bryant city | $78,446 |
| Clark County | $90,733 |
| Hamlin County | $109,883 |
Get Average Household Income for all Zip Codes in South Dakota.
The per-capita income for 57221 is $42,426. The per capita income ($42,426) for 57221 is less than the per capita income for 57241 ($51,442). But it's more than 57278 ($25,003), 57242 ($33,848), 57248 ($34,650), 57271 ($30,407), 57231 ($41,058), 57233 ($18,478), Hamlin County ($39,106), Clark County ($34,226), and Bryant city ($24,491).
| 57221 | $42,426 |
| Bryant city | $24,491 |
| Clark County | $34,226 |
| Hamlin County | $39,106 |
Get Per-Capita Income for all Zip Codes in South Dakota.
12.9% of households make over $200,000 a year. The percent high income households (12.9%) for 57221 is less than the percent high income households for 57233 (21.1%). But it's more than 57278 (3.9%), 57242 (2.0%), 57248 (4.2%), 57271 (8.9%), 57231 (7.6%), 57241 (7.0%), Hamlin County (7.9%), Clark County (5.5%), and Bryant city (6.1%).
| 57221 | 12.9% |
| Bryant city | 6.1% |
| Clark County | 5.5% |
| Hamlin County | 7.9% |
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 | |
|---|---|---|---|---|
| 57221 | $64,286 | $74,531 | $83,333 | $61,250 |
| Bryant city | $78,750 | $47,174 | $56,250 | $68,333 |
| Clark County | $44,375 | $93,875 | $82,813 | $56,161 |
| Hamlin County | $78,125 | $88,403 | $102,656 | $60,000 |
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 57221 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+ | |||||
| 57221 | +/-$7,905 | +/-$42,171 | +/-$15,894 | +/-7.4% | +/-$26,756 | +/-$55,608 | +/-$43,757 | +/-$26,528 |
| Bryant city | +/-$10,448 | +/-$13,239 | +/-$4,995 | +/-6.2% | +/-$28,100 | +/-$30,772 | +/-$31,672 | +/-$10,348 |
| Clark County | +/-$6,465 | +/-$8,924 | +/-$3,847 | +/-2.3% | +/-$23,707 | +/-$9,756 | +/-$31,649 | +/-$11,771 |
| Hamlin County | +/-$2,886 | +/-$11,220 | +/-$4,091 | +/-1.9% | +/-$6,071 | +/-$6,851 | +/-$13,143 | +/-$15,826 |