Comparison to Surrounding Areas
The median household income ($79,091) for 57720 is less than the median household income for 57649 ($84,500), 57651 ($94,559), Harding County ($80,441), and Buffalo town ($85,104). But it's more than 57717 ($77,689), 57724 ($61,146), 57755 ($68,125), 57760 ($65,054), 57776 ($-1), 58623 ($64,487), and 58651 ($75,956).
| 57720 | $79,091 |
| Buffalo town | $85,104 |
| Harding County | $80,441 |
Get Median Household Income for all Zip Codes in South Dakota.
The average household income ($100,011) for 57720 is less than the average household income for 57649 ($147,625), 57651 ($118,750), 57755 ($105,869), and Harding County ($104,230). But it's more than 57760 ($76,435), 57717 ($96,815), 57724 ($77,364), 58651 ($85,666), 57776 ($-1), 58623 ($86,958), and Buffalo town ($99,242).
| 57720 | $100,011 |
| Buffalo town | $99,242 |
| Harding County | $104,230 |
Get Average Household Income for all Zip Codes in South Dakota.
The per-capita income for 57720 is $51,037. The per capita income ($51,037) for 57720 is less than the per capita income for 57649 ($52,166) and Buffalo town ($58,004). But it's more than 58651 ($44,796), 57651 ($33,360), 57717 ($39,455), 57724 ($45,862), 57755 ($44,098), 57760 ($32,442), 57776 ($-1), 58623 ($39,729), and Harding County ($45,756).
| 57720 | $51,037 |
| Buffalo town | $58,004 |
| Harding County | $45,756 |
Get Per-Capita Income for all Zip Codes in South Dakota.
6.8% of households make over $200,000 a year. The percent high income households (6.8%) for 57720 is less than the percent high income households for 57717 (8.1%), 57649 (32.0%), 57651 (9.3%), 58651 (7.9%), 57724 (9.8%), 57755 (13.3%), and Harding County (9.8%). But it's more than 57760 (4.3%), 57776 (-1.0%), 58623 (3.0%), and Buffalo town (6.2%).
| 57720 | 6.8% |
| Buffalo town | 6.2% |
| Harding County | 9.8% |
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 | |
|---|---|---|---|---|
| 57720 | $60,625 | $86,667 | $86,477 | $51,250 |
| Buffalo town | $-1 | $97,500 | $110,347 | $51,500 |
| Harding County | $60,625 | $80,156 | $84,250 | $78,125 |
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 57720 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+ | |||||
| 57720 | +/-$9,878 | +/-$17,816 | +/-$9,140 | +/-4.0% | +/-$59,609 | +/-$26,422 | +/-$27,113 | +/-$31,597 |
| Buffalo town | +/-$10,203 | +/-$20,423 | +/-$13,399 | +/-6.4% | +/-$-1 | +/-$14,430 | +/-$41,336 | +/-$25,256 |
| Harding County | +/-$9,875 | +/-$14,315 | +/-$6,328 | +/-4.0% | +/-$59,609 | +/-$24,191 | +/-$11,858 | +/-$24,960 |