Population 225 · Census ACS 2020–24
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Population and households in ZIP 57021
Household size in ZIP 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 2.09 | 2.51 | 2.68 |
| 2010–14 | 2.40 | 2.51 | 2.73 |
| 2015–19 | 2.57 | 2.50 | 2.71 |
| 2020–24 | 2.45 | 2.48 | 2.65 |
| Change | +0.36 | −0.03 | −0.03 |
The average household in ZIP 57021 has 2.45 people, under the U.S. average of 2.65. That is in line with the rest of South Dakota. Household size has climbed from 2.09 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.
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 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 47.7 | 37.9 | 37.7 |
| 2010–14 | 44.7 | 38.3 | 38.6 |
| 2015–19 | 37.4 | 38.8 | 39.6 |
| 2020–24 | 44.8 | 38.9 | 40.1 |
| Change | −2.9 | +1.0 | +2.3 |
ZIP 57021 skews older: half of its residents are older than 44.8, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
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 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 6.8% | 10.8% | 12.3% |
| 2010–14 | 6.8% | 11.1% | 12.3% |
| 2015–19 | 8.5% | 10.9% | 11.6% |
| 2020–24 | 8.8% | 10.7% | 11.6% |
| Change | +2.0 pts | −0.1 pts | −0.6 pts |
Single parents head about one in twelve households in ZIP 57021 (8.8%), below 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 57021
Renters in ZIP 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 14.8% | 31.1% | 33.3% |
| 2010–14 | 12.7% | 32.0% | 35.6% |
| 2015–19 | 7.0% | 32.0% | 36.0% |
| 2020–24 | 12.2% | 31.4% | 34.8% |
| Change | −2.6 pts | +0.3 pts | +1.5 pts |
ZIP 57021 is overwhelmingly a place of homeowners: only 12.2% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Nearly half of owners (46.5%) have paid off their mortgages, 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 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 12.7% | 11.3% | 11.4% |
| 2010–14 | 3.8% | 10.7% | 11.4% |
| 2015–19 | 23.3% | 11.6% | 11.1% |
| 2020–24 | 9.4% | 10.3% | 9.6% |
| Change | −3.3 pts | −1.1 pts | −1.8 pts |
Vacancy in ZIP 57021 is close to the national rate: 9.4% of homes are empty, against 9.6%.
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 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 1938 | 1972 | 1974 |
| 2010–14 | 1953 | 1974 | 1975 |
| 2015–19 | 1949 | 1977 | 1977 |
| 2020–24 | 1938 | 1981 | 1980 |
| Change | ±0 | +9 | +6 |
The housing in ZIP 57021 is old by national standards: the median home dates to 1938, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates.
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 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | $625 | $631 | $965 |
| 2010–14 | $658 | $692 | $1,040 |
| 2015–19 | $788 | $798 | $1,213 |
| 2020–24 | $594 | $1,000 | $1,571 |
| Change | −$31 | +$369 | +$606 |
The median renter in ZIP 57021 pays $594 a month for rent and utilities, well below the national median of $1,571. Rent takes 13.1% 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 57021
Bachelor's degrees in ZIP 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 25.8% | 26.8% | 28.4% |
| 2010–14 | 19.0% | 27.8% | 29.6% |
| 2015–19 | 21.8% | 29.4% | 32.1% |
| 2020–24 | 31.9% | 32.5% | 35.6% |
| Change | +6.1 pts | +5.6 pts | +7.2 pts |
Nearly a third of adults 25 and older in ZIP 57021 (31.9%) have a bachelor's degree or higher, a little below the national share of 35.6%. South Dakota as a whole looks much the same.
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 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 91.7% | 89.9% | 84.9% |
| 2010–14 | 96.2% | 91.0% | 86.1% |
| 2015–19 | 95.2% | 91.8% | 87.7% |
| 2020–24 | 92.6% | 93.1% | 89.3% |
| Change | +0.9 pts | +3.2 pts | +4.3 pts |
High school completion in ZIP 57021 is above the national rate: 92.6% of adults have a diploma or equivalent, against 89.3%. The picture is much the same across South Dakota.
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 57021
| Period | ZIP 57021 | South Dakota | U.S. |
|---|---|---|---|
| 2006–10 | 3.2% | 4.9% | 8.1% |
| 2010–14 | 2.0% | 4.9% | 9.4% |
| 2015–19 | 3.4% | 3.6% | 5.6% |
| 2020–24 | 5.4% | 3.1% | 5.4% |
| Change | +2.2 pts | −1.7 pts | −2.7 pts |
At 5.4%, unemployment in ZIP 57021 is the same as the national rate. The rate is higher than in South Dakota overall (3.1%). Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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 57021 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 57021 | 2.45 | 44.8 | 8.8% | 12.2% | 9.4% | 1938 | $594 | 31.9% | 92.6% | 5.4% |
| ZIP 57036 | 2.52 | 42.6 | 7.4% | 16.7% | 10.5% | 1947 | $673 | 32.5% | 92.1% | 3.3% |
| ZIP 57039 | 2.52 | 40.3 | 8.9% | 18.5% | 4.2% | 1979 | $953 | 24.5% | 90.7% | 1.2% |
| ZIP 57070 | 2.29 | 41.4 | 7.5% | 34.1% | 19.9% | 1964 | $722 | 27.2% | 91.6% | 0.2% |
| ZIP 57014 | 2.53 | 41.5 | 7.2% | 18.5% | 4.6% | 1954 | $653 | 29.4% | 93.1% | 1.4% |
| ZIP 57077 | 2.64 | 37.7 | 8.4% | 10.9% | 2.5% | 1992 | $1,231 | 27.1% | 95.0% | 1.0% |
| ZIP 57013 | 2.25 | 43.2 | 11.6% | 25.0% | 8.7% | 1962 | $801 | 17.7% | 93.1% | 3.9% |
| ZIP 57029 | 2.67 | 40.7 | 6.4% | 20.0% | 12.2% | 1959 | $744 | 29.5% | 94.0% | 1.8% |
| ZIP 57027 | 2.32 | 48.4 | 9.4% | 13.6% | 6.0% | 1938 | $870 | 15.6% | 91.6% | 0.4% |
| ZIP 57034 | 2.36 | 46.6 | 8.3% | 14.5% | 7.3% | 1942 | $890 | 18.8% | 91.4% | 0.6% |
| ZIP 51240 | 2.75 | 35.7 | 3.1% | 13.4% | 4.6% | 1971 | $980 | 16.3% | 94.1% | 1.4% |
All figures 2020–24.
Zip codes with similar populations: 99666, AK · 03746, NH · 67041, KS · 62459, IL · 66958, KS · 66944, KS · 66941, KS · 66746, KS · 66527, KS · 66501, KS
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 57021. 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.
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