City · Missouri
Clarkson Valley, Missouri
Clarkson Valley, city, in St. Louis County, Missouri. Clarkson Valley had 2,540 residents on July 1, 2025 by the Census Bureau's estimate, down 2.6% since 2020; the 2020 Census counted 2,609 and the ACS 2020-2024 5-year estimates put it at 2,584 (±35). GEOID 2914176.
Residents, July 2025 estimate
2,540
Census Bureau estimate (no margin published)
2020 Census count: 2,609 · ACS 2020-2024: 2,584 ±35
Median household income
$247,000
±$26,617 (90% margin)
Missouri: $70,702
Median home value
$867,000
±$35,276 (90% margin)
Missouri: $230,300
Median gross rent
not published
Missouri: $1,033
Where is Clarkson Valley and what county is it in?
Clarkson Valley is a city in St. Louis County, Missouri. It covers 2.7 square miles of land, 968 residents per square mile in 2020.
Clarkson Valley 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 Clarkson Valley, and is it growing?
The Census Bureau estimates that 2,540 people lived in Clarkson Valley on July 1, 2025, down 2.6% since 2020, while Missouri grew 1.9%. The 2020 Census counted 2,609 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 2,584 (±35).
| Measure | Clarkson Valley | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,584 ±35 | 995,569 | no clear change |
| Households | 858 ±71 | 413,849 | no clear change |
| Average household size | 3.01 ±0.25 | 2.36 | no clear change |
| Housing units | 870 ±73 | 446,192 | no clear change |
Clarkson Valley's population since 2000
From 2,675 in 2000 to 2,540 in 2025: down 5.0%. The 2000, 2010 and 2020 figures are census counts, each for Clarkson Valley 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 Clarkson Valley?
The median resident of Clarkson Valley is 44.9 years old; 27.8% are under 18 and 17.3% are 65 or older. The largest group is non-Hispanic white residents at 84.0%, then Hispanic or Latino residents (of any race) at 6.0%.
| Measure | Clarkson Valley | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 44.9 ±3.6 | 40.3 | −7.3 |
| Under 18 years | 27.8% ±4.7 pts | 22.0% | – |
| 65 years and over | 17.3% ±3.9 pts | 19.1% | – |
| Male | 51.4% ±3.9 pts | 47.8% | – |
| Hispanic or Latino (any race) | 6.0% ±3.9 pts | 3.9% | – |
| White alone, not Hispanic | 84.0% ±8.3 pts | 61.4% | no clear change |
| Black or African American alone, not Hispanic | 0.7% ±1.0 pts | 24.0% | – |
| Asian alone, not Hispanic | 3.3% ±4.3 pts | 4.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.3 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.9% ±5.9 pts | 5.3% | – |
| Some other race alone, not Hispanic | 0.2% ±0.4 pts | 0.5% | – |
| Born outside the United States | 5.6% ±4.0 pts | 8.4% | – |
| Speak a language other than English at home (age 5+) | 10.0% ±5.3 pts | 10.5% | – |
| Civilian veterans (age 18+) | 4.2% ±1.7 pts | 6.0% | – |
| With a disability | 6.4% ±2.3 pts | 12.1% | – |
| No health insurance coverage | 0.5% ±0.9 pts | 5.7% | – |
| High school graduate or higher (age 25+) | 99.6% ±0.5 pts | 94.5% | – |
| Bachelor's degree or higher (age 25+) | 80.2% ±4.5 pts | 47.4% | no clear change |
| Graduate or professional degree (age 25+) | 38.5% ±6.0 pts | 20.4% | – |
| Lived in the same house a year earlier | 91.0% ±4.9 pts | 88.2% | – |
| Moved from another state in the past year | 1.3% ±1.3 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 Clarkson Valley earn?
Half of Clarkson Valley's 858 households earn less than $247,000 a year (±$26,617), against $82,936 in St. Louis County and $70,702 in Missouri. In 2015-2019 it was $215,525 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Clarkson Valley | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $247,000 ±$26,617 | $82,936 | no clear change |
| Mean household income | $332,693 ±$42,824 | $123,036 | – |
| Per capita income | $113,452 ±$14,905 | $51,977 | no clear change |
| People below the poverty line | 3.0% ±2.5 pts | 9.8% | – |
| Children under 18 below the poverty line | 1.4% ±2.4 pts | 13.5% | – |
| Households receiving SNAP | 0.0% ±4.0 pts | 8.0% | – |
| Households with a computer | 99.7% ±0.6 pts | 96.3% | – |
| Households with a broadband subscription | 98.0% ±1.7 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 Clarkson Valley?
Owners occupy 96.5% of Clarkson Valley's occupied homes and renters 3.5%. The median owner-occupied home is valued at $867,000 by its owner (±$35,276).
| Measure | Clarkson Valley | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $867,000 ±$35,276 | $276,800 | +$76,033 |
| Median monthly owner costs, with a mortgage | $3,967 ±$304 | $1,753 | – |
| Owner-occupied homes | 96.5% ±2.8 pts | 69.2% | −3.2 pts |
| Renter-occupied homes | 3.5% ±2.8 pts | 30.8% | – |
| Housing units | 870 ±73 | 446,192 | no clear change |
| Homeowner vacancy rate | 0.0% ±4.1 pts | 0.7% | – |
| Rental vacancy rate | 0.0% ±56.2 pts | 5.0% | – |
| Single-family detached homes | 100.0% ±3.9 pts | 72.0% | – |
| Mobile homes | 0.0% ±3.9 pts | 0.3% | – |
| Built 2020 or later | 0.0% ±3.9 pts | 0.7% | – |
| Built 2010 to 2019 | 0.5% ±0.7 pts | 3.5% | – |
| Built 1939 or earlier | 0.2% ±0.4 pts | 9.7% | – |
| Households with no vehicle | 0.9% ±1.4 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 many new homes is Clarkson Valley building?
Builders took permits for 0 new housing units in Clarkson Valley in 2025 (0 in single-family houses), 0.0 per 1,000 residents against 2.8 across Missouri.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Clarkson Valley work and get to work?
57.4% of Clarkson Valley's workers drive alone and 36.8% work from home. The average trip to work takes 21.6 minutes.
| Measure | Clarkson Valley | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 55.8% ±4.7 pts | 65.0% | – |
| Unemployment rate | 2.9% ±2.0 pts | 4.3% | – |
| Drove alone to work | 57.4% ±6.9 pts | 71.3% | – |
| Carpooled | 5.8% ±4.3 pts | 6.4% | – |
| Public transportation | 0.0% ±3.2 pts | 1.4% | – |
| Walked | 0.0% ±3.2 pts | 1.4% | – |
| Worked from home | 36.8% ±6.4 pts | 18.3% | +25.2 pts |
| Mean travel time to work | 21.6 min ±2.0 | 23.1 min | −5.3 min |
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 Clarkson Valley?
No census tract lies mostly in Clarkson Valley; 3 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2216.26St. Louis County | 6,127 | $183,355 |
| Tract 2178.52St. Louis County | 6,554 | $176,315 |
| Tract 2216.29St. Louis County | 6,281 | $212,614 |
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 Clarkson Valley) · Census block assignment files
How does Clarkson Valley compare with other places in Missouri?
By the Census Bureau's July 2025 estimates, Clarkson Valley is the 6,854th-most populous of the 19,476 U.S. incorporated places that have one and the 210th-most populous of 936 in Missouri.
Clarkson Valley ranks 2nd of 416 places in Missouri with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 210th | 936 |
| Growth 2020-2025 (PEP) | 338th | 394 |
| Residents per square mile | 236th | 420 |
| Median household income | 2nd | 416 |
| Per capita income | 4th | 420 |
| Median home value | 4th | 416 |
| Bachelor's degree or higher | 5th | 404 |
| Median age | 57th | 420 |
| Owner-occupied share | 9th | 418 |
| Work from home | 1st | 270 |
| Travel time to work | 240th | 420 |
Clarkson Valley's figures with every place in Missouri (CSV)
Every place in Missouri, sortable · Compare Clarkson Valley 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 Clarkson Valley?
24 of the 55 figures for Clarkson Valley 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 Clarkson Valley 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 Clarkson Valley.