St Denis, Catonsville, MD Demographics

Population 3,196 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
St Denis, Catonsville, MD map of median age by neighborhood
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Population and households in St Denis

Household size in St Denis

Household size, people per household
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–102.982.302.612.682.68
2010–142.902.652.652.732.73
2015–192.922.682.652.742.71
2020–242.632.812.592.682.65
Change−0.35+0.51−0.02+0.01−0.03
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At 2.63 people per household, St Denis sits close to the national average of 2.65. The typical household here is smaller than in Catonsville as a whole, where it has 2.81 people. Since 2006–10, household size has dropped from 2.98, 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 St Denis

Median age, years
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–1041.841.738.738.537.7
2010–1444.341.039.539.338.6
2015–1946.143.140.240.239.6
2020–2448.141.940.340.640.1
Change+6.3+0.2+1.6+2.1+2.3
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St Denis skews older: half of its residents are older than 48.1, 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 St Denis

Single-parent households, % of households
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–105.6%8.7%12.6%12.5%12.3%
2010–144.9%9.4%12.3%12.6%12.3%
2015–194.3%8.2%11.6%11.7%11.6%
2020–243.3%9.6%11.5%11.7%11.6%
Change−2.3 pts+0.9 pts−1.1 pts−0.9 pts−0.6 pts
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Single-parent households are relatively rare in St Denis: 3.3% of households, against 11.6% nationally.

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 St Denis

Renters in St Denis

Renters, % of occupied homes
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–108.6%29.5%32.0%31.0%33.3%
2010–145.3%31.3%33.5%32.9%35.6%
2015–197.6%25.8%33.5%33.1%36.0%
2020–2421.0%30.6%33.1%32.4%34.8%
Change+12.4 pts+1.1 pts+1.1 pts+1.4 pts+1.5 pts
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St Denis is largely a place of homeowners: only 21.0% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 26.5% have no mortgage at all, well below 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 St Denis

Vacant homes, % of all homes
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–104.0%6.0%9.3%9.0%11.4%
2010–145.4%8.7%9.3%8.9%11.4%
2015–194.4%6.5%9.4%8.9%11.1%
2020–245.2%5.2%7.2%7.1%9.6%
Change+1.2 pts−0.8 pts−2.1 pts−1.9 pts−1.8 pts
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Empty homes are scarce in St Denis: just 5.2% sit vacant, compared with 9.6% nationally, a sign of a tight housing market. That is in line with the rest of Catonsville.

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 St Denis

Age of homes, median year built
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–1019821960197119741974
2010–1419841961197219751975
2015–1919871963197319761977
2020–2419941966197519781980
Change+12+7+4+4+6
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St Denis has newer housing than the country as a whole: the median home was built in 1994, 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 St Denis

Rent, per month
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–10$1,473$1,226$1,179$1,249$965
2010–14$1,206$1,240$1,293$1,363$1,040
2015–19$1,924$1,489$1,477$1,576$1,213
2020–24$1,430$1,692$1,778$1,869$1,571
Change−$43+$467+$599+$620+$606
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A typical rental in St Denis costs $1,430 a month with utilities, below the national median of $1,571. The typical renter here spends 30.2% of household income on rent, just over 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 St Denis

Bachelor's degrees in St Denis

Bachelor's degrees, % of adults 25+
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–1054.0%40.0%35.6%36.3%28.4%
2010–1459.1%43.5%37.3%37.7%29.6%
2015–1964.5%47.0%40.8%40.5%32.1%
2020–2467.0%53.6%44.1%43.4%35.6%
Change+12.9 pts+13.6 pts+8.5 pts+7.1 pts+7.2 pts
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College graduates are unusually common in St Denis: 67.0% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby.

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 St Denis

High school graduates, % of adults 25+
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–1096.2%92.8%87.8%88.0%84.9%
2010–1495.7%90.9%89.5%89.1%86.1%
2015–1995.1%95.2%91.1%90.2%87.7%
2020–2497.4%93.9%92.1%90.9%89.3%
Change+1.2 pts+1.1 pts+4.3 pts+2.9 pts+4.3 pts
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Finishing high school is nearly universal in St Denis: 97.4% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.

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 St Denis

Unemployment, % of the labor force
PeriodSt DenisCatonsvilleBaltimore areaMarylandU.S.
2006–104.5%4.6%6.6%6.5%8.1%
2010–144.6%6.0%8.3%8.1%9.4%
2015–193.4%3.2%5.2%5.1%5.6%
2020–242.0%4.1%4.8%5.0%5.4%
Change−2.5 pts−0.4 pts−1.8 pts−1.5 pts−2.7 pts
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The job market in St Denis has been strong: just 2.0% of the labor force was out of work and looking, well below the national rate of 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).

St Denis compared with nearby neighborhoods

NeighborhoodHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
St Denis2.6348.13.3%21.0%5.2%1994$1,43067.0%97.4%2.0%
Catonsville Heights3.0735.317.1%35.7%6.5%1960$1,56344.8%88.5%7.2%
Westchester2.4944.07.7%15.3%3.4%1967$1,75159.8%92.6%6.3%
Westowne2.4637.415.6%49.7%6.4%1960$1,55946.1%90.0%3.3%
Westgate2.3634.418.4%44.6%9.1%1954$1,50332.3%95.1%3.5%
Westview Park3.2838.711.0%32.9%13.6%1961$1,52624.8%64.9%3.3%
Morrell Park2.3442.911.6%47.7%9.8%1951$1,14921.5%77.4%5.2%
Edmondson Heights2.2047.513.6%31.7%7.0%1958$1,40426.5%88.3%9.0%
Beechfielf-Irvington Area2.3140.219.4%51.3%13.4%1951$1,26312.7%85.3%9.6%
Lakeland3.2027.519.4%66.8%10.0%1962$1,3567.0%52.7%9.6%
Pumphrey2.8539.96.7%20.4%9.2%1963$1,54021.9%84.7%4.9%

All figures 2020–24.

Neighborhoods with similar populations: University Drive, Coral Springs, FL · South Park, Des Moines, IA · South Elmwood, Providence, RI · San Jose Forest, Jacksonville, FL · Pine Brook, Camp Hill, PA · O'Fallon, St. Louis, MO · Arlington, Birmingham, AL · Independence Plaza, Kansas City, MO · West Lake Sammamish, Bellevue, WA · West Sharyland, Mission, 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 St Denis. 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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