Population 3,044 · Census ACS 2020–24
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Population and households in Byrnes Mill
Household size in Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.64 | 2.52 | 2.49 | 2.68 |
| 2010–14 | 2.61 | 2.53 | 2.52 | 2.73 |
| 2015–19 | 2.63 | 2.49 | 2.50 | 2.71 |
| 2020–24 | 2.68 | 2.46 | 2.49 | 2.65 |
| Change | +0.04 | −0.06 | −0.00 | −0.03 |
At 2.68 people per household, Byrnes Mill sits close to the national average of 2.65. The typical household here is bigger than in the St. Louis area overall, where it has 2.46 people.
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 Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 36.9 | 38.5 | 38.4 | 37.7 |
| 2010–14 | 40.0 | 39.5 | 39.2 | 38.6 |
| 2015–19 | 39.4 | 40.7 | 40.0 | 39.6 |
| 2020–24 | 35.1 | 40.8 | 40.1 | 40.1 |
| Change | −1.8 | +2.3 | +1.7 | +2.3 |
With a median age of just 35.1, Byrnes Mill is far younger than the country as a whole (40.1), a population that tilts toward young adults and children. The median age has dropped from 36.9 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
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 Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.8% | 11.7% | 11.3% | 12.3% |
| 2010–14 | 6.1% | 11.5% | 11.4% | 12.3% |
| 2015–19 | 15.5% | 11.0% | 10.9% | 11.6% |
| 2020–24 | 14.3% | 11.1% | 11.0% | 11.6% |
| Change | +5.4 pts | −0.6 pts | −0.3 pts | −0.6 pts |
Single-parent households are more common in Byrnes Mill than nationally: 14.3%, against 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 Byrnes Mill
Renters in Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 16.9% | 28.3% | 30.0% | 33.3% |
| 2010–14 | 19.8% | 30.1% | 32.1% | 35.6% |
| 2015–19 | 21.3% | 31.1% | 33.2% | 36.0% |
| 2020–24 | 22.3% | 29.6% | 31.9% | 34.8% |
| Change | +5.4 pts | +1.4 pts | +1.9 pts | +1.5 pts |
Byrnes Mill is largely a place of homeowners: only 22.3% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Nearly four in ten owners (38.6%) 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 Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 11.2% | 9.6% | 11.6% | 11.4% |
| 2010–14 | 8.7% | 10.1% | 12.0% | 11.4% |
| 2015–19 | 11.8% | 10.1% | 12.2% | 11.1% |
| 2020–24 | 6.1% | 8.8% | 10.5% | 9.6% |
| Change | −5.1 pts | −0.8 pts | −1.1 pts | −1.8 pts |
Vacancy is on the low side in Byrnes Mill: 6.1% of homes sit empty, against 9.6% nationally, which points to steady demand for housing.
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 Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 1989 | 1972 | 1974 | 1974 |
| 2010–14 | 1986 | 1972 | 1975 | 1975 |
| 2015–19 | 1987 | 1973 | 1976 | 1977 |
| 2020–24 | 1992 | 1975 | 1978 | 1980 |
| Change | +3 | +3 | +4 | +6 |
Byrnes Mill has newer housing than the country as a whole: the median home was built in 1992, versus 1980 nationally.
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 Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | $589 | $825 | $740 | $965 |
| 2010–14 | $634 | $920 | $816 | $1,040 |
| 2015–19 | $866 | $1,010 | $899 | $1,213 |
| 2020–24 | $1,135 | $1,239 | $1,122 | $1,571 |
| Change | +$545 | +$414 | +$383 | +$606 |
A typical rental in Byrnes Mill costs $1,135 a month with utilities, well below the national median of $1,571. Rent takes 22.7% 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 Byrnes Mill
Bachelor's degrees in Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 16.2% | 30.3% | 26.0% | 28.4% |
| 2010–14 | 16.4% | 32.1% | 27.3% | 29.6% |
| 2015–19 | 22.3% | 34.9% | 29.6% | 32.1% |
| 2020–24 | 18.9% | 38.5% | 32.6% | 35.6% |
| Change | +2.7 pts | +8.3 pts | +6.6 pts | +7.2 pts |
College degrees are relatively uncommon in Byrnes Mill: 18.9% 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 Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 87.6% | 88.8% | 86.8% | 84.9% |
| 2010–14 | 87.8% | 90.5% | 88.3% | 86.1% |
| 2015–19 | 88.2% | 92.1% | 90.0% | 87.7% |
| 2020–24 | 92.6% | 93.6% | 91.8% | 89.3% |
| Change | +5.0 pts | +4.8 pts | +5.1 pts | +4.3 pts |
About nine in ten adults in Byrnes Mill have finished high school (92.6%), above the national rate of 89.3%. The St. Louis area as a whole looks much the same.
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 Byrnes Mill
| Period | Byrnes Mill | St. Louis area | Missouri | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.9% | 7.7% | 7.4% | 8.1% |
| 2010–14 | 8.4% | 8.8% | 8.4% | 9.4% |
| 2015–19 | 4.2% | 4.9% | 4.6% | 5.6% |
| 2020–24 | 10.4% | 4.3% | 4.1% | 5.4% |
| Change | +4.5 pts | −3.4 pts | −3.3 pts | −2.7 pts |
Unemployment in Byrnes Mill runs well above the national rate: 10.4% of the labor force was out of work and looking, against 5.4%. 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).
Byrnes Mill 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Byrnes Mill | 2.68 | 35.1 | 14.3% | 22.3% | 6.1% | 1992 | $1,135 | 18.9% | 92.6% | 10.4% |
| House Springs | 2.79 | 41.8 | 13.3% | 12.9% | 8.1% | 1989 | $999 | 23.4% | 90.4% | 1.8% |
| Scotsdale | 2.80 | 41.0 | 6.7% | 10.8% | 7.3% | 1990 | $1,436 | 28.0% | 92.8% | 4.7% |
| High Ridge | 2.58 | 45.2 | 5.7% | 11.4% | 5.5% | 1983 | $1,057 | 27.7% | 93.6% | 2.7% |
| Parkdale | 2.62 | 43.9 | 9.2% | 17.0% | 6.0% | 1991 | $919 | 27.9% | 95.9% | 0.4% |
| Eureka | 2.80 | 39.9 | 7.2% | 16.9% | 3.8% | 1998 | $1,236 | 50.4% | 95.9% | 3.3% |
| Times Beach | 2.60 | 51.9 | 3.2% | 5.7% | 1.4% | 2004 | $1,314 | 55.7% | 98.8% | 2.3% |
| Murphy | 2.47 | 40.6 | 8.9% | 15.3% | 8.5% | 1982 | $1,065 | 23.9% | 91.7% | 3.8% |
| Cedar Hill | 2.40 | 46.2 | 5.0% | 6.6% | 8.2% | 1988 | $1,347 | 21.9% | 91.3% | 4.2% |
| Fenton | 2.64 | 42.4 | 7.1% | 20.3% | 6.0% | 1989 | $1,306 | 44.9% | 95.2% | 2.1% |
| Lake Tekakwitha | 2.25 | 52.5 | 1.4% | 0.9% | 2.3% | 1988 | $900 | 52.3% | 90.2% | 1.7% |
All figures 2020–24.
Cities with similar populations: Keenesburg, CO · Butler, GA · Canadian, TX · Whitehall, WI · Corrigan, TX · Coward, SC · Elkhart Lake, WI · Erin, TN · Farmington, IL · Fowlers Mill, OH
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 Byrnes Mill. 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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