Population 318 · Census ACS 2020–24
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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in Japan
Household size in Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.53 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 2.58 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 2.30 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.43 | 2.46 | 2.49 | 2.65 |
| Change | −0.10 | −0.06 | −0.00 | −0.03 |
Households in Japan run small, averaging 2.43 people against 2.65 nationally, which usually means more singles and couples and fewer children. The St. Louis area as a whole looks much the same. Household size has dropped from 2.53 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 Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 43.0 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 43.1 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 48.7 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 46.9 | 40.8 | 40.1 | 40.1 |
| Change | +3.9 | +2.3 | +1.7 | +2.3 |
Japan skews older: half of its residents are older than 46.9, 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 Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.9% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 6.9% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 2.4% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 7.5% | 11.1% | 11.0% | 11.6% |
| Change | +0.7 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single parents head only 7.5% of households in Japan, well 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 Japan
Renters in Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.4% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 11.6% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 12.8% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 6.4% | 29.6% | 31.9% | 34.8% |
| Change | −6.0 pts | +1.4 pts | +1.9 pts | +1.5 pts |
Only 6.4% of households in Japan rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Just over four in ten owners (42.7%) have paid off their mortgages, about the same as nationally.
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 Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.7% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 8.2% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 9.8% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 10.2% | 8.8% | 10.5% | 9.6% |
| Change | −2.5 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Vacancy in Japan is close to the national rate: 10.2% 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 Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 1972 | 1972 | 1974 | 1974 |
| 2010–14 | 1971 | 1972 | 1975 | 1975 |
| 2015–19 | 1976 | 1973 | 1976 | 1977 |
| 2020–24 | 1976 | 1975 | 1978 | 1980 |
| Change | +5 | +3 | +4 | +6 |
The typical home in Japan was built around 1976, 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 Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $608 | $825 | $740 | $965 |
| 2010–14 | $626 | $920 | $816 | $1,040 |
| 2015–19 | $620 | $1,010 | $899 | $1,213 |
| 2020–24 | $864 | $1,239 | $1,122 | $1,571 |
| Change | +$256 | +$414 | +$383 | +$606 |
The median renter in Japan pays $864 a month for rent and utilities, well below the national median of $1,571. The typical renter here spends 25.4% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
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 Japan
Bachelor's degrees in Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 15.3% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 14.3% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 16.3% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 11.6% | 38.5% | 32.6% | 35.6% |
| Change | −3.7 pts | +8.3 pts | +6.6 pts | +7.2 pts |
College degrees are relatively uncommon in Japan: 11.6% 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 Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 82.1% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 86.7% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 90.2% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 90.6% | 93.6% | 91.8% | 89.3% |
| Change | +8.5 pts | +4.8 pts | +5.1 pts | +4.3 pts |
High school completion in Japan is close to the national rate: 90.6% of adults have a diploma or equivalent, against 89.3%. The rate is lower than in the wider St. Louis area (93.6%).
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 Japan
| Period | Japan | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.3% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 8.7% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 2.8% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 1.2% | 4.3% | 4.1% | 5.4% |
| Change | −5.1 pts | −3.4 pts | −3.3 pts | −2.7 pts |
The job market in Japan has been strong: just 1.2% of the labor force was out of work and looking, well below the national rate of 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).
Japan compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Japan | 2.43 | 46.9 | 7.5% | 6.4% | 10.2% | 1976 | $864 | 11.6% | 90.6% | 1.2% |
| Argo | 2.31 | 41.6 | 6.5% | 11.6% | 2.3% | 1988 | $978 | 8.7% | 85.9% | 6.5% |
| Strain | 2.30 | 51.4 | 4.6% | 8.5% | 13.0% | 1974 | $1,026 | 20.8% | 88.6% | 3.5% |
| Oak Hill | 2.64 | 46.5 | 6.8% | 10.6% | 24.1% | 1989 | $1,065 | 14.1% | 89.8% | 3.0% |
| Coffeyton | 2.31 | 39.9 | 9.7% | 27.8% | 3.9% | 1983 | $958 | 10.0% | 85.2% | 4.7% |
| Bourbon | 2.45 | 39.6 | 9.9% | 25.9% | 10.5% | 1981 | $980 | 18.1% | 86.8% | 3.8% |
| West Sullivan | 2.22 | 43.6 | 9.6% | 28.5% | 2.4% | 1984 | $1,081 | 10.0% | 81.9% | 2.8% |
| St. Cloud | 2.41 | 42.0 | 7.9% | 22.8% | 6.3% | 1982 | $1,096 | 15.7% | 84.2% | 2.6% |
| Sullivan | 2.32 | 41.9 | 15.1% | 29.5% | 8.9% | 1980 | $940 | 21.3% | 91.3% | 4.3% |
| Tea | 2.82 | 42.5 | 15.1% | 20.0% | 15.5% | 1980 | $848 | 17.8% | 94.3% | 6.5% |
| Oak Grove Village | 2.17 | 45.1 | 11.0% | 41.9% | 19.7% | 1969 | $851 | 11.3% | 88.5% | 2.1% |
All figures 2020–24.
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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 Japan. 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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