South Dakota Gazetteer
ZIP Code 57221 has segments in 3 Counties (Clark, Hamlin, Kingsbury).
The ZIP Code maps and database are updated 4 times per year.
Database updated: March 1, 2026, Maps updated: May 1, 2024.
Source: 2020-2024 American Community Survey 5-Year Estimates
POPULATION | |
|---|---|
| Total Population | 1,158 (100%) |
| Population Density | 10 per sq mi |
| Diversity Index1 | 5 |
INCOME | |
| Median Household Income | $73,988 |
| Per Capita Income | $42,426 |
| Median Home Value | $227,100 |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 368 (100%) |
| Owner Occupied HU | 265 (72.0%) |
| Renter Occupied HU | 76 (20.7%) |
| Vacant Housing Units | 27 (7.3%) |
HOUSEHOLDS | |
| Total Households | 341 |
| Average Household Size | 3.17 |
| Family Households | 248 (72.7%) |
The table below compares 57221 to the other 33,772 ZIP Codes in the United States by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
| Variable Description | Rank | Percentile |
|---|---|---|
| Total Population | # 22101 | 35th |
| Population Density | # 28198 | 17th |
| Median Household Income | # 15792 | 53rd |
| Per Capita Income | # 11028 | 67th |
| Diversity Index | # 29720 | 12th |
Additional comparisons and rankings can be made with a VERY EASY TO USE South Dakota Census Data Comparison Tool.
