Village · Missouri
Marlborough, Missouri
Marlborough, village, in St. Louis County, Missouri. Marlborough had 2,185 residents on July 1, 2025 by the Census Bureau's estimate, down 1.5% since 2020; the 2020 Census counted 2,221 and the ACS 2020-2024 5-year estimates put it at 2,157 (±563). GEOID 2946208.
Residents, July 2025 estimate
2,185
Census Bureau estimate (no margin published)
2020 Census count: 2,221 · ACS 2020-2024: 2,157 ±563
Median household income
$50,300
±$14,258 (90% margin)
Missouri: $70,702
Median home value
$191,600
±$30,060 (90% margin)
Missouri: $230,300
Median gross rent
$990
±$70 (90% margin)
Missouri: $1,033
Where is Marlborough and what county is it in?
Marlborough is a village in St. Louis County, Missouri. It covers 0.2 square miles of land, 9,784 residents per square mile in 2020.
Marlborough 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 Marlborough, and is it growing?
The Census Bureau estimates that 2,185 people lived in Marlborough on July 1, 2025, down 1.5% since 2020, while Missouri grew 1.9%. The 2020 Census counted 2,221 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 2,157 (±563).
| Measure | Marlborough | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,157 ±563 | 995,569 | no clear change |
| Households | 1,340 ±310 | 413,849 | no clear change |
| Average household size | 1.61 ±0.20 | 2.36 | no clear change |
| Housing units | 1,570 ±305 | 446,192 | no clear change |
Marlborough's population since 2000
From 2,235 in 2000 to 2,185 in 2025: down 2.2%. The 2000, 2010 and 2020 figures are census counts, each for Marlborough 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 Marlborough?
The median resident of Marlborough is 32.3 years old; 7.9% are under 18 and 14.9% are 65 or older. The largest group is non-Hispanic white residents at 72.9%, then non-Hispanic Black residents at 11.2%. 8.3% of residents were born outside the United States.
| Measure | Marlborough | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 32.3 ±8.7 | 40.3 | no clear change |
| Under 18 years | 7.9% ±3.9 pts | 22.0% | – |
| 65 years and over | 14.9% ±7.7 pts | 19.1% | – |
| Male | 43.8% ±8.5 pts | 47.8% | – |
| Hispanic or Latino (any race) | 9.1% ±9.6 pts | 3.9% | – |
| White alone, not Hispanic | 72.9% ±8.1 pts | 61.4% | no clear change |
| Black or African American alone, not Hispanic | 11.2% ±7.9 pts | 24.0% | – |
| Asian alone, not Hispanic | 3.4% ±3.5 pts | 4.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.6 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.6 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.3% ±3.5 pts | 5.3% | – |
| Some other race alone, not Hispanic | 0.0% ±1.6 pts | 0.5% | – |
| Born outside the United States | 8.3% ±5.4 pts | 8.4% | no clear change |
| Speak a language other than English at home (age 5+) | 7.1% ±5.7 pts | 10.5% | – |
| Civilian veterans (age 18+) | 5.2% ±3.6 pts | 6.0% | – |
| With a disability | 13.8% ±6.8 pts | 12.1% | – |
| No health insurance coverage | 10.6% ±7.9 pts | 5.7% | – |
| High school graduate or higher (age 25+) | 98.7% ±2.1 pts | 94.5% | – |
| Bachelor's degree or higher (age 25+) | 35.5% ±12.3 pts | 47.4% | no clear change |
| Graduate or professional degree (age 25+) | 14.1% ±7.6 pts | 20.4% | – |
| Lived in the same house a year earlier | 68.9% ±10.3 pts | 88.2% | – |
| Moved from another state in the past year | 8.1% ±5.8 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 Marlborough earn?
Half of Marlborough's 1,340 households earn less than $50,300 a year (±$14,258), against $82,936 in St. Louis County and $70,702 in Missouri. In 2015-2019 it was $54,207 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Marlborough | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $50,300 ±$14,258 | $82,936 | no clear change |
| Mean household income | $65,698 ±$11,730 | $123,036 | – |
| Per capita income | $42,105 ±$4,586 | $51,977 | no clear change |
| People below the poverty line | 4.6% ±3.7 pts | 9.8% | – |
| Children under 18 below the poverty line | 9.4% ±14.0 pts | 13.5% | – |
| Households receiving SNAP | 0.0% ±2.6 pts | 8.0% | – |
| Households with a computer | 96.7% ±3.5 pts | 96.3% | – |
| Households with a broadband subscription | 99.0% ±1.8 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 Marlborough?
Owners occupy 12.9% of Marlborough's occupied homes and renters 87.1%. The median owner-occupied home is valued at $191,600 by its owner (±$30,060). The median renter pays $990 a month including utilities, and 38.8% of renters pay 35% or more of their income on rent.
| Measure | Marlborough | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $191,600 ±$30,060 | $276,800 | no clear change |
| Median gross rent | $990 ±$70 | $1,209 | no clear change |
| Renters paying 35% or more of income on rent | 38.8% ±15.1 pts | 39.5% | no clear change |
| Median monthly owner costs, with a mortgage | $1,607 ±$183 | $1,753 | – |
| Owner-occupied homes | 12.9% ±5.3 pts | 69.2% | no clear change |
| Renter-occupied homes | 87.1% ±5.3 pts | 30.8% | – |
| Housing units | 1,570 ±305 | 446,192 | no clear change |
| Homeowner vacancy rate | 25.0% ±32.6 pts | 0.7% | – |
| Rental vacancy rate | 3.4% ±5.7 pts | 5.0% | – |
| Single-family detached homes | 29.2% ±12.8 pts | 72.0% | – |
| Mobile homes | 0.0% ±2.2 pts | 0.3% | – |
| Built 2020 or later | 3.9% ±6.1 pts | 0.7% | – |
| Built 2010 to 2019 | 1.0% ±1.5 pts | 3.5% | – |
| Built 1939 or earlier | 3.9% ±2.8 pts | 9.7% | – |
| Households with no vehicle | 7.2% ±5.2 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 Marlborough work and get to work?
80.6% of Marlborough's workers drive alone. The average trip to work takes 23.5 minutes.
| Measure | Marlborough | St. Louis County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 82.4% ±7.5 pts | 65.0% | – |
| Unemployment rate | 0.7% ±1.1 pts | 4.3% | – |
| Drove alone to work | 80.6% ±10.2 pts | 71.3% | – |
| Carpooled | 2.4% ±2.6 pts | 6.4% | – |
| Public transportation | 5.9% ±5.5 pts | 1.4% | – |
| Walked | 0.0% ±2.1 pts | 1.4% | – |
| Worked from home | 9.5% ±8.4 pts | 18.3% | – |
| Mean travel time to work | 23.5 min ±4.4 | 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 Marlborough?
No census tract lies mostly in Marlborough; 3 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2197St. Louis County | 5,167 | $64,178 |
| Tract 2208.01St. Louis County | 5,491 | $90,000 |
| Tract 2196.01St. Louis County | 4,198 | $78,896 |
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 Marlborough) · Census block assignment files
How does Marlborough compare with other places in Missouri?
By the Census Bureau's July 2025 estimates, Marlborough is the 7,381st-most populous of the 19,476 U.S. incorporated places that have one and the 229th-most populous of 936 in Missouri.
Marlborough ranks 293rd 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 | 229th | 936 |
| Growth 2020-2025 (PEP) | 298th | 394 |
| Residents per square mile | 1st | 420 |
| Median household income | 293rd | 416 |
| Per capita income | 72nd | 420 |
| Median home value | 146th | 416 |
| Median gross rent | 135th | 398 |
| Bachelor's degree or higher | 80th | 404 |
| Median age | 372nd | 420 |
| Owner-occupied share | 418th | 418 |
| Travel time to work | 179th | 420 |
Marlborough's figures with every place in Missouri (CSV)
Every place in Missouri, sortable · Compare Marlborough 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 Marlborough?
26 of the 57 figures for Marlborough 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 Marlborough 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 Marlborough.