Comparison to Surrounding Areas
The median household income ($70,208) for 57278 is less than the median household income for 57231 ($78,646), 57322 ($71,667), 57353 ($75,625), 57221 ($73,988), 57271 ($85,524), Clark County ($70,726), and Willow Lake city ($72,875). But it's more than 57225 ($66,875) and Mayfield Colony CDP ($-1).
| 57278 | $70,208 |
| Mayfield Colony CDP | $-1 |
| Willow Lake city | $72,875 |
| Clark County | $70,726 |
Get Median Household Income for all Zip Codes in South Dakota.
The average household income ($92,047) for 57278 is less than the average household income for 57221 ($125,017), 57231 ($96,356), 57322 ($130,451), and 57353 ($101,044). But it's more than 57225 ($81,700), 57271 ($85,213), Clark County ($90,733), Mayfield Colony CDP ($-1), and Willow Lake city ($74,255).
| 57278 | $92,047 |
| Mayfield Colony CDP | $-1 |
| Willow Lake city | $74,255 |
| Clark County | $90,733 |
Get Average Household Income for all Zip Codes in South Dakota.
The per-capita income for 57278 is $25,003. The per capita income ($25,003) for 57278 is less than the per capita income for 57231 ($41,058), 57221 ($42,426), 57225 ($37,542), 57353 ($42,452), 57271 ($30,407), 57322 ($38,070), and Clark County ($34,226). But it's more than Mayfield Colony CDP ($-1) and Willow Lake city ($19,581).
| 57278 | $25,003 |
| Mayfield Colony CDP | $-1 |
| Willow Lake city | $19,581 |
| Clark County | $34,226 |
Get Per-Capita Income for all Zip Codes in South Dakota.
3.9% of households make over $200,000 a year. The percent high income households (3.9%) for 57278 is less than the percent high income households for 57231 (7.6%), 57221 (12.9%), 57225 (5.3%), 57353 (4.5%), 57271 (8.9%), 57322 (17.6%), and Clark County (5.5%). But it's more than Mayfield Colony CDP (-1.0%) and Willow Lake city (0.9%).
| 57278 | 3.9% |
| Mayfield Colony CDP | -1.0% |
| Willow Lake city | 0.9% |
| Clark County | 5.5% |
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 | |
|---|---|---|---|---|
| 57278 | $50,000 | $88,750 | $64,871 | $35,625 |
| Mayfield Colony CDP | $-1 | $-1 | $-1 | $-1 |
| Willow Lake city | $-1 | $93,750 | $-1 | $38,125 |
| Clark County | $44,375 | $93,875 | $82,813 | $56,161 |
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 57278 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+ | |||||
| 57278 | +/-$12,825 | +/-$21,917 | +/-$6,119 | +/-3.9% | +/-$2,571 | +/-$17,523 | +/-$46,799 | +/-$12,020 |
| Mayfield Colony CDP | +/-$-1 | +/-$-1 | +/-$-1 | +/--1.0% | +/-$-1 | +/-$-1 | +/-$-1 | +/-$-1 |
| Willow Lake city | +/-$18,641 | +/-$9,756 | +/-$5,993 | +/-3.8% | +/-$-1 | +/-$24,740 | +/-$-1 | +/-$11,847 |
| Clark County | +/-$6,465 | +/-$8,924 | +/-$3,847 | +/-2.3% | +/-$23,707 | +/-$9,756 | +/-$31,649 | +/-$11,771 |