Mark Twain, St. Louis, MO Demographics

Population 3,087 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Mark Twain, St. Louis, MO map of median age by neighborhood
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Population and households in Mark Twain

Household size in Mark Twain

Household size, people per household
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–102.782.522.492.68
2010–142.422.532.522.73
2015–192.282.492.502.71
2020–241.982.462.492.65
Change−0.80−0.06−0.00−0.03
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Mark Twain is a place of small households, averaging 1.98 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has dropped from 2.78 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 Mark Twain

Median age, years
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–1029.938.538.437.7
2010–1440.939.539.238.6
2015–1940.240.740.039.6
2020–2447.640.840.140.1
Change+17.8+2.3+1.7+2.3
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With a median age of 47.6, Mark Twain is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. Of St. Louis' 39 neighborhoods, only three are older.

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 Mark Twain

Single-parent households, % of households
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–1027.1%11.7%11.3%12.3%
2010–1418.5%11.5%11.4%12.3%
2015–1917.7%11.0%10.9%11.6%
2020–2412.9%11.1%11.0%11.6%
Change−14.1 pts−0.6 pts−0.3 pts−0.6 pts
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Single-parent households are a bit more common in Mark Twain than nationally: 12.9%, 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 Mark Twain

Renters in Mark Twain

Renters, % of occupied homes
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–1038.0%28.3%30.0%33.3%
2010–1444.2%30.1%32.1%35.6%
2015–1932.8%31.1%33.2%36.0%
2020–2438.7%29.6%31.9%34.8%
Change+0.6 pts+1.4 pts+1.9 pts+1.5 pts
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Renting is a bit more common in Mark Twain than nationally: 38.7% of households rent their homes, against 34.8% for the U.S. Nearly six in ten owners (55.8%) have paid off their mortgages, well above the national share of 39.8%. Compared with other St. Louis neighborhoods, though, Mark Twain has a lower share of renters than most.

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 Mark Twain

Vacant homes, % of all homes
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–1020.6%9.6%11.6%11.4%
2010–1419.2%10.1%12.0%11.4%
2015–1929.4%10.1%12.2%11.1%
2020–2432.3%8.8%10.5%9.6%
Change+11.7 pts−0.8 pts−1.1 pts−1.8 pts
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Vacancy is high in Mark Twain: 32.3% 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. Only one other St. Louis neighborhood has a higher vacancy rate.

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 Mark Twain

Age of homes, median year built
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–101946197219741974
2010–141945197219751975
2015–191941197319761977
2020–241944197519781980
Change−2+3+4+6
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The housing in Mark Twain is old by national standards: the median home dates to 1944, 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 Mark Twain

Rent, per month
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–10$658$825$740$965
2010–14$765$920$816$1,040
2015–19$789$1,010$899$1,213
2020–24$876$1,239$1,122$1,571
Change+$219+$414+$383+$606
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A typical rental in Mark Twain costs $876 a month with utilities, well below the national median of $1,571. The typical renter here spends 27.5% of household income on rent, just under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Few St. Louis neighborhoods have lower rents: only three of 39.

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 Mark Twain

Bachelor's degrees in Mark Twain

Bachelor's degrees, % of adults 25+
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–109.6%30.3%26.0%28.4%
2010–1412.1%32.1%27.3%29.6%
2015–198.6%34.9%29.6%32.1%
2020–2416.3%38.5%32.6%35.6%
Change+6.7 pts+8.3 pts+6.6 pts+7.2 pts
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Fewer adults in Mark Twain have a four-year degree than in the country as a whole: 16.3%, against 35.6% nationally. Mark Twain has a lower share of college graduates than the great majority of St. Louis neighborhoods.

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 Mark Twain

High school graduates, % of adults 25+
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–1070.5%88.8%86.8%84.9%
2010–1473.5%90.5%88.3%86.1%
2015–1979.1%92.1%90.0%87.7%
2020–2485.4%93.6%91.8%89.3%
Change+14.9 pts+4.8 pts+5.1 pts+4.3 pts
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About one in seven adults in Mark Twain never finished high school, more than nationally: 85.4% have a diploma or equivalent, against 89.3% across the U.S. Mark Twain has a lower share of high school graduates than most St. Louis neighborhoods.

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 Mark Twain

Unemployment, % of the labor force
PeriodMark TwainSt. Louis areaMissouriU.S.
2006–1019.6%7.7%7.4%8.1%
2010–1425.2%8.8%8.4%9.4%
2015–1921.1%4.9%4.6%5.6%
2020–2429.0%4.3%4.1%5.4%
Change+9.4 pts−3.4 pts−3.3 pts−2.7 pts
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Unemployment in Mark Twain runs well above the national rate: 29.0% of the labor force was out of work and looking, against 5.4%. No other St. Louis neighborhood has higher unemployment. 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).

Mark Twain compared with nearby neighborhoods

NeighborhoodHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Mark Twain1.9847.612.9%38.7%32.3%1944$87616.3%85.4%29.0%
Penrose2.5441.728.4%56.6%27.8%1939$1,16117.2%83.3%11.7%
Wells-Goodfellow2.6335.137.2%69.9%31.2%1949$88112.2%83.6%14.8%
North Pointe2.6238.331.0%43.5%9.2%1946$1,20613.4%92.4%6.1%
O'Fallon1.7844.913.4%63.7%29.8%1938$7718.9%85.6%17.4%
The Greater Ville2.1444.113.9%62.7%35.5%1940$88511.9%78.8%9.8%
Baden2.0949.322.1%43.8%21.5%1949$93112.0%86.0%8.0%
West End2.3734.512.3%70.5%22.1%1950$98038.5%91.1%6.9%
Jeff-Vander-Lou2.0148.315.4%79.2%29.5%1958$89114.8%81.4%5.9%
Debaliviere Place1.5534.32.4%71.0%9.9%1940$1,16971.5%92.8%3.4%
Central West End1.5834.42.8%73.1%12.8%1961$1,14271.6%96.3%1.6%

All figures 2020–24.

Neighborhoods with similar populations: Cornerstone Village North, Houston, TX · West Park, Canton, OH · Downtown Fremont Historic District, Fremont, OH · Downtown, Albuquerque, NM · Dogwood Hollow, Levittown, PA · Denver Harbor-Port Houston, Houston, TX · Davie Heights, Davie, FL · Dauphin Acres, Mobile, AL · Cuesta Park, Mountain View, CA · East Campus, Columbia, MO

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 Mark Twain. 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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