57566 can be classified socioeconomically as Lower Class class compared to other ZIP Codes in South Dakota based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 57566 is Native American. The majority race/ethnicity attending public schools in 57566 is Native American. The current unemployment level in 57566 is 2.2%.
| Population | 990 |
| Population Growth Rate | -45.49% |
| Population Density | 5 People per Square Mile |
| Total Households | 376 |
| Median Household Income (2021) | $21,771 |
| Average Adjusted Gross Income (2021) | $78,640 |
| Current Unemployment Rate (May 2026) | 2.2% |
| Sales Tax Rate (2025) | 8.4% |
| Majority Race/Ethnicity | Native American - 100% |
| Public School Majority Race/Ethnicity | Native American - 95.93% |
57566 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|
| White | 0 | 0% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 803 | 100% |
| Hawaiian/Pac. Islander | 0 | 0% |
57566 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|
| White | 0 | 0% |
| Black | 0 | 0% |
| Hispanic | 7 | 4.07% |
| Asian | 0 | 0% |
| Native American | 165 | 95.93% |
| Hawaiian/Pac. Islander | 0 | 0% |
57566 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|
| Less Than 1 Year of College | 106 | 19.92% |
| Bachelor Degree | 67 | 12.59% |
| High School Diploma | 117 | 21.99% |
| No High School Diploma | 42 | 7.89% |
| GED or Alternate | 21 | 3.95% |
| 1 or More Years of College | 163 | 30.64% |
| Associates Degree | 16 | 3.01% |
| Masters Degree | 0 | 0% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
