Village · Missouri
Twin Oaks, Missouri
Twin Oaks, village, in St. Louis County, Missouri. Twin Oaks had 583 residents on July 1, 2025 by the Census Bureau's estimate, down 1.4% since 2020; the 2020 Census counted 605 and the ACS 2020-2024 5-year estimates put it at 734 (±228). GEOID 2974284.
Residents, July 2025 estimate
583
Census Bureau estimate (no margin published)
2020 Census count: 605 · ACS 2020-2024: 734 ±228
Median household income
$120,151
±$32,730 (90% margin)
Missouri: $70,702
Median home value
$298,800
±$40,102 (90% margin)
Missouri: $230,300
Median gross rent
$1,778
±$53 (90% margin)
Missouri: $1,033
Where is Twin Oaks and what county is it in?
Twin Oaks is a village in St. Louis County, Missouri. It covers 0.3 square miles of land, 2,249 residents per square mile in 2020.
Twin Oaks is in the St. Louis, MO-IL metropolitan statistical area, which takes in 15 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Twin Oaks, and is it growing?
The Census Bureau estimates that 583 people lived in Twin Oaks on July 1, 2025, down 1.4% since 2020, while Missouri grew 1.9%. The 2020 Census counted 605 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 734 (±228).
| Measure | Twin Oaks | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 734 ±228 | 995,569 | +360 |
| Households | 478 ±195 | 413,849 | +303 |
| Average household size | 1.54 ±0.26 | 2.36 | −0.60 |
| Housing units | 496 ±195 | 446,192 | +312 |
Twin Oaks's population since 2000
From 362 in 2000 to 583 in 2025: up 61.0%. The 2000, 2010 and 2020 figures are census counts, each for Twin Oaks as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Twin Oaks?
The median resident of Twin Oaks is 42.4 years old; 9.7% are under 18 and 16.9% are 65 or older. The largest group is non-Hispanic white residents at 89.1%, then non-Hispanic Asian residents at 3.7%. 10.8% of residents were born outside the United States.
| Measure | Twin Oaks | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.4 ±1.8 | 40.3 | −13.1 |
| Under 18 years | 9.7% ±4.4 pts | 22.0% | – |
| 65 years and over | 16.9% ±7.4 pts | 19.1% | – |
| Male | 55.6% ±12.2 pts | 47.8% | – |
| Hispanic or Latino (any race) | 1.5% ±1.3 pts | 3.9% | – |
| White alone, not Hispanic | 89.1% ±6.6 pts | 61.4% | −9.8 pts |
| Black or African American alone, not Hispanic | 3.0% ±3.2 pts | 24.0% | – |
| Asian alone, not Hispanic | 3.7% ±4.9 pts | 4.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±4.7 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±4.7 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.7% ±2.5 pts | 5.3% | – |
| Some other race alone, not Hispanic | 0.0% ±4.7 pts | 0.5% | – |
| Born outside the United States | 10.8% ±6.1 pts | 8.4% | – |
| Speak a language other than English at home (age 5+) | 8.9% ±5.6 pts | 10.5% | – |
| Civilian veterans (age 18+) | 3.0% ±1.8 pts | 6.0% | – |
| With a disability | 7.2% ±3.6 pts | 12.1% | – |
| No health insurance coverage | 2.3% ±2.2 pts | 5.7% | – |
| High school graduate or higher (age 25+) | 97.1% ±2.7 pts | 94.5% | – |
| Bachelor's degree or higher (age 25+) | 76.5% ±8.4 pts | 47.4% | +29.9 pts |
| Graduate or professional degree (age 25+) | 29.0% ±11.3 pts | 20.4% | – |
| Lived in the same house a year earlier | 83.1% ±8.1 pts | 88.2% | – |
| Moved from another state in the past year | 5.8% ±3.8 pts | 2.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Twin Oaks earn?
Half of Twin Oaks's 478 households earn less than $120,151 a year (±$32,730), against $82,936 in St. Louis County and $70,702 in Missouri. In 2015-2019 it was $94,738 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Twin Oaks | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $120,151 ±$32,730 | $82,936 | no clear change |
| Mean household income | $114,049 ±$11,280 | $123,036 | – |
| Per capita income | $74,363 ±$13,341 | $51,977 | no clear change |
| People below the poverty line | 2.7% ±1.9 pts | 9.8% | – |
| Children under 18 below the poverty line | 2.8% ±6.2 pts | 13.5% | – |
| Households receiving SNAP | 2.1% ±3.4 pts | 8.0% | – |
| Households with a computer | 99.4% ±0.9 pts | 96.3% | – |
| Households with a broadband subscription | 99.4% ±0.9 pts | 93.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Twin Oaks?
Owners occupy 32.0% of Twin Oaks's occupied homes and renters 68.0%. The median owner-occupied home is valued at $298,800 by its owner (±$40,102). The median renter pays $1,778 a month including utilities.
| Measure | Twin Oaks | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $298,800 ±$40,102 | $276,800 | +$80,475 |
| Median gross rent | $1,778 ±$53 | $1,209 | +$763 |
| Renters paying 35% or more of income on rent | 13.5% ±10.1 pts | 39.5% | – |
| Median monthly owner costs, with a mortgage | $2,031 ±$294 | $1,753 | – |
| Owner-occupied homes | 32.0% ±15.0 pts | 69.2% | −62.9 pts |
| Renter-occupied homes | 68.0% ±15.0 pts | 30.8% | – |
| Housing units | 496 ±195 | 446,192 | +312 |
| Homeowner vacancy rate | 0.0% ±20.3 pts | 0.7% | – |
| Rental vacancy rate | 0.0% ±10.0 pts | 5.0% | – |
| Single-family detached homes | 20.2% ±9.5 pts | 72.0% | – |
| Mobile homes | 0.2% ±0.6 pts | 0.3% | – |
| Built 2020 or later | 3.8% ±3.8 pts | 0.7% | – |
| Built 2010 to 2019 | 60.5% ±17.3 pts | 3.5% | – |
| Built 1939 or earlier | 0.0% ±6.8 pts | 9.7% | – |
| Households with no vehicle | 27.8% ±29.4 pts | 6.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Twin Oaks work and get to work?
81.9% of Twin Oaks's workers drive alone and 16.2% work from home. The average trip to work takes 24.0 minutes.
| Measure | Twin Oaks | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 78.8% ±7.9 pts | 65.0% | – |
| Unemployment rate | 1.7% ±1.4 pts | 4.3% | – |
| Drove alone to work | 81.9% ±9.1 pts | 71.3% | – |
| Carpooled | 1.9% ±1.7 pts | 6.4% | – |
| Public transportation | 0.0% ±6.5 pts | 1.4% | – |
| Walked | 0.0% ±6.5 pts | 1.4% | – |
| Worked from home | 16.2% ±8.7 pts | 18.3% | – |
| Mean travel time to work | 24.0 min ±3.0 | 23.1 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Twin Oaks?
No census tract lies mostly in Twin Oaks; 4 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2179.42St. Louis County | 5,164 | $96,086 |
| Tract 2179.41St. Louis County | 6,364 | $115,667 |
| Tract 2181.02St. Louis County | 3,074 | $86,701 |
| Tract 2180.13St. Louis County | 5,552 | $114,779 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Twin Oaks) · Census block assignment files
How does Twin Oaks compare with other places in Missouri?
By the Census Bureau's July 2025 estimates, Twin Oaks is the 12,588th-most populous of the 19,476 U.S. incorporated places that have one and the 439th-most populous of 936 in Missouri.
Twin Oaks is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 439th | 936 |
Twin Oaks's figures with every place in Missouri (CSV)
Every place in Missouri, sortable · Compare Twin Oaks with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Twin Oaks?
22 of the 57 figures for Twin Oaks on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Twin Oaks are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Twin Oaks.