Population 286 · Census ACS 2020–24
Choose a measure to map it.Tap a measure to map it. Swipe the row for more. Arrows show the change since 2006–10.
Median age by neighborhoodHistory and comparison ↓︎
Younger residents
Older residents
Colorblind friendly
off
More maps of ZIP 57621: Best Neighborhoods · Walk Grade · Household income · Home prices · Race · Politics · Traffic noise · Internet
Population and households in ZIP 57621
Household size in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 4.06 | 2.51 | 2.68 |
| 2010–14 | 3.89 | 2.51 | 2.73 |
| 2015–19 | 4.08 | 2.50 | 2.71 |
| 2020–24 | 3.45 | 2.48 | 2.65 |
| Change | −0.61 | −0.03 | −0.03 |
Households in ZIP 57621 are large by national standards, averaging 3.45 people against 2.65 for the U.S. That usually means more families with children at home. Household size has dropped from 4.06 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 28.5 | 37.9 | 37.7 |
| 2010–14 | 27.8 | 38.3 | 38.6 |
| 2015–19 | 27.7 | 38.8 | 39.6 |
| 2020–24 | 29.3 | 38.9 | 40.1 |
| Change | +0.8 | +1.0 | +2.3 |
With a median age of just 29.3, ZIP 57621 is far younger than the country as a whole (40.1), a population that tilts toward young families with children.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 21.7% | 10.8% | 12.3% |
| 2010–14 | 35.0% | 11.1% | 12.3% |
| 2015–19 | 28.7% | 10.9% | 11.6% |
| 2020–24 | 28.4% | 10.7% | 11.6% |
| Change | +6.7 pts | −0.1 pts | −0.6 pts |
Single parents head nearly three in ten households in ZIP 57621 (28.4%), well above the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in ZIP 57621
Renters in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 41.8% | 31.1% | 33.3% |
| 2010–14 | 46.8% | 32.0% | 35.6% |
| 2015–19 | 45.6% | 32.0% | 36.0% |
| 2020–24 | 44.3% | 31.4% | 34.8% |
| Change | +2.5 pts | +0.3 pts | +1.5 pts |
More than four in ten households in ZIP 57621 rent their homes (44.3%), above the national share of 34.8%. About nine in ten owners (90.9%) have paid off their mortgages, well above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 21.1% | 11.3% | 11.4% |
| 2010–14 | 22.2% | 10.7% | 11.4% |
| 2015–19 | 22.1% | 11.6% | 11.1% |
| 2020–24 | 15.4% | 10.3% | 9.6% |
| Change | −5.7 pts | −1.1 pts | −1.8 pts |
Vacancy is high in ZIP 57621: 15.4% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 1973 | 1972 | 1974 |
| 2010–14 | 1975 | 1974 | 1975 |
| 2015–19 | 1977 | 1977 | 1977 |
| 2020–24 | 1983 | 1981 | 1980 |
| Change | +10 | +9 | +6 |
The typical home in ZIP 57621 was built around 1983, about the same vintage as the country's housing overall (1980).
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | $463 | $631 | $965 |
| 2010–14 | $405 | $692 | $1,040 |
| 2015–19 | $439 | $798 | $1,213 |
| 2020–24 | $430 | $1,000 | $1,571 |
| Change | −$33 | +$369 | +$606 |
A typical rental in ZIP 57621 costs $430 a month with utilities, well below the national median of $1,571. Rent takes 14.5% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in ZIP 57621
Bachelor's degrees in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 13.5% | 26.8% | 28.4% |
| 2010–14 | 11.0% | 27.8% | 29.6% |
| 2015–19 | 12.9% | 29.4% | 32.1% |
| 2020–24 | 12.4% | 32.5% | 35.6% |
| Change | −1.1 pts | +5.6 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 57621: 12.4% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 90.4% | 89.9% | 84.9% |
| 2010–14 | 84.1% | 91.0% | 86.1% |
| 2015–19 | 78.8% | 91.8% | 87.7% |
| 2020–24 | 84.2% | 93.1% | 89.3% |
| Change | −6.1 pts | +3.2 pts | +4.3 pts |
Nearly one in six adults in ZIP 57621 never finished high school, well above the national share: only 84.2% have a diploma or equivalent, against 89.3% nationally.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in ZIP 57621
| Period | ZIP 57621 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 11.7% | 4.9% | 8.1% |
| 2010–14 | 35.1% | 4.9% | 9.4% |
| 2015–19 | 29.6% | 3.6% | 5.6% |
| 2020–24 | 30.8% | 3.1% | 5.4% |
| Change | +19.1 pts | −1.7 pts | −2.7 pts |
Unemployment in ZIP 57621 runs well above the national rate: 30.8% of the labor force was out of work and looking, against 5.4%. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
ZIP 57621 compared with nearby ZIP codes
| ZIP code | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| ZIP 57621 | 3.45 | 29.3 | 28.4% | 44.3% | 15.4% | 1983 | $430 | 12.4% | 84.2% | 30.8% |
| ZIP 57639 | 3.45 | 29.3 | 28.4% | 44.3% | 15.4% | 1983 | $430 | 12.4% | 84.2% | 30.8% |
| ZIP 57642 | 3.68 | 27.2 | 34.5% | 48.2% | 15.0% | 1974 | $596 | 19.5% | 83.7% | 27.9% |
| ZIP 57660 | 2.46 | 39.4 | 5.6% | 20.9% | 23.0% | 1956 | $455 | 26.8% | 96.0% | 0.3% |
| ZIP 57658 | 3.89 | 27.7 | 31.7% | 43.4% | 14.7% | 1981 | $456 | 15.6% | 81.1% | 40.0% |
| ZIP 57634 | 2.42 | 39.5 | 5.0% | 20.2% | 23.2% | 1955 | $450 | 27.0% | 96.5% | 0.0% |
| ZIP 57646 | 2.08 | 52.6 | 1.0% | 24.0% | 20.2% | 1958 | $1,088 | 36.4% | 93.4% | 3.3% |
| ZIP 57632 | 2.19 | 46.6 | 0.4% | 23.3% | 9.7% | 1965 | $786 | 35.3% | 89.6% | 2.8% |
| ZIP 57437 | 1.91 | 55.9 | 6.6% | 18.4% | 22.8% | 1963 | $569 | 25.0% | 82.8% | 0.8% |
| ZIP 57640 | 2.28 | 55.4 | 8.3% | 19.6% | 35.6% | 1973 | $738 | 32.2% | 97.3% | 1.8% |
| ZIP 57457 | 2.25 | 43.7 | 4.5% | 19.4% | 26.0% | 1971 | $538 | 28.1% | 82.4% | 1.1% |
All figures 2020–24.
Zip codes with similar populations: 42326, KY · 82710, WY · 82329, WY · 81656, CO · 81655, CO · 81121, CO · 81071, CO · 80834, CO · 79741, TX · 79719, TX
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up ZIP 57621. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
No other site shows detail at this level for free. We are able to keep this site free by receiving a small commission from the referring links on this page. Please share or cite this page if you aren’t able to otherwise support our work.