Census-designated place · New York
Marlboro, New York
Marlboro, census-designated place, in Ulster County, New York. Marlboro had 3,699 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 3,679 (±587). GEOID 3645700.
Residents, 2020 Census
3,699
Census count or controlled total
ACS 2020-2024 estimate: 3,679 ±587
Median household income
$119,318
±$23,318 (90% margin)
New York: $85,974
Median home value
$412,800
±$42,275 (90% margin)
New York: $423,800
Median gross rent
$1,828
±$398 (90% margin)
New York: $1,621
Where is Marlboro and what county is it in?
Marlboro is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Ulster County, New York. It covers 5.0 square miles of land, 742 residents per square mile in 2020.
Marlboro is in the Kingston, NY metropolitan statistical area (Census Bureau delineation, July 2023).
Marlboro lies entirely within the Town of Marlborough, a town with its own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Marlboro, and is it growing?
The 2020 Census counted 3,699 residents in Marlboro, a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 3,679 (±587).
The Census Bureau publishes yearly population estimates for incorporated places only; Marlboro is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Marlboro | Ulster County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,679 ±587 | 182,601 | no clear change |
| Households | 1,432 ±245 | 74,278 | no clear change |
| Average household size | 2.57 ±0.31 | 2.26 | no clear change |
| Housing units | 1,620 ±270 | 86,503 | no clear change |
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 Marlboro?
The median resident of Marlboro is 44.8 years old; 26.0% are under 18 and 20.6% are 65 or older. The largest group is non-Hispanic white residents at 77.2%, then Hispanic or Latino residents (of any race) at 10.1%. 6.2% of residents were born outside the United States.
| Measure | Marlboro | Ulster County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 44.8 ±6.5 | 44.1 | no clear change |
| Under 18 years | 26.0% ±5.3 pts | 17.1% | – |
| 65 years and over | 20.6% ±7.7 pts | 21.3% | – |
| Male | 49.0% ±4.3 pts | 49.7% | – |
| Hispanic or Latino (any race) | 10.1% ±6.4 pts | 12.2% | no clear change |
| White alone, not Hispanic | 77.2% ±9.4 pts | 72.4% | no clear change |
| Black or African American alone, not Hispanic | 4.1% ±3.0 pts | 5.7% | – |
| Asian alone, not Hispanic | 0.8% ±0.9 pts | 2.1% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.1 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 7.7% ±6.3 pts | 6.3% | – |
| Some other race alone, not Hispanic | 0.0% ±1.1 pts | 1.3% | – |
| Born outside the United States | 6.2% ±3.0 pts | 8.1% | no clear change |
| Speak a language other than English at home (age 5+) | 10.4% ±5.7 pts | 12.1% | – |
| Civilian veterans (age 18+) | 3.3% ±1.8 pts | 4.3% | – |
| With a disability | 15.2% ±6.0 pts | 14.3% | – |
| No health insurance coverage | 4.5% ±2.7 pts | 6.9% | – |
| High school graduate or higher (age 25+) | 96.0% ±2.3 pts | 92.2% | – |
| Bachelor's degree or higher (age 25+) | 50.5% ±10.7 pts | 38.2% | +20.6 pts |
| Graduate or professional degree (age 25+) | 15.5% ±6.0 pts | 17.5% | – |
| Lived in the same house a year earlier | 92.7% ±4.6 pts | 90.3% | – |
| Moved from another state in the past year | 0.3% ±0.6 pts | 1.4% | – |
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 Marlboro earn?
Half of Marlboro's 1,432 households earn less than $119,318 a year (±$23,318), against $86,271 in Ulster County and $85,974 in New York. In 2015-2019 the median was $85,995 in 2024 dollars, so it rose by $33,323 after inflation.
| Measure | Marlboro | Ulster County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $119,318 ±$23,318 | $86,271 | +$33,323 |
| Mean household income | $171,510 ±$48,826 | $117,353 | – |
| Per capita income | $62,704 ±$17,137 | $47,778 | no clear change |
| People below the poverty line | 2.9% ±3.0 pts | 14.6% | – |
| Children under 18 below the poverty line | 0.0% ±4.8 pts | 13.5% | – |
| Households receiving SNAP | 5.4% ±3.9 pts | 9.8% | – |
| Households with a computer | 93.3% ±5.9 pts | 94.5% | – |
| Households with a broadband subscription | 89.2% ±6.3 pts | 92.4% | – |
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 Marlboro?
Owners occupy 75.6% of Marlboro's occupied homes and renters 24.4%. The median owner-occupied home is valued at $412,800 by its owner (±$42,275). The median renter pays $1,828 a month including utilities, and 61.3% of renters pay 35% or more of their income on rent.
| Measure | Marlboro | Ulster County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $412,800 ±$42,275 | $352,500 | +$119,649 |
| Median gross rent | $1,828 ±$398 | $1,425 | +$729 |
| Renters paying 35% or more of income on rent | 61.3% ±19.4 pts | 49.6% | no clear change |
| Median monthly owner costs, with a mortgage | $3,077 ±$449 | $2,287 | – |
| Owner-occupied homes | 75.6% ±10.1 pts | 69.9% | +12.8 pts |
| Renter-occupied homes | 24.4% ±10.1 pts | 30.1% | – |
| Housing units | 1,620 ±270 | 86,503 | no clear change |
| Homeowner vacancy rate | 0.0% ±3.8 pts | 1.1% | – |
| Rental vacancy rate | 0.0% ±11.5 pts | 4.9% | – |
| Single-family detached homes | 83.5% ±7.9 pts | 67.8% | – |
| Mobile homes | 1.2% ±2.2 pts | 5.8% | – |
| Built 2020 or later | 2.5% ±3.5 pts | 0.9% | – |
| Built 2010 to 2019 | 7.8% ±8.4 pts | 4.7% | – |
| Built 1939 or earlier | 16.9% ±6.9 pts | 26.5% | – |
| Households with no vehicle | 4.7% ±4.1 pts | 7.3% | – |
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 Marlboro work and get to work?
64.0% of Marlboro's workers drive alone and 16.8% work from home. The average trip to work takes 33.2 minutes.
| Measure | Marlboro | Ulster County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 59.8% ±6.6 pts | 58.1% | – |
| Unemployment rate | 0.7% ±1.2 pts | 5.4% | – |
| Drove alone to work | 64.0% ±13.2 pts | 68.9% | – |
| Carpooled | 13.9% ±12.0 pts | 6.5% | – |
| Public transportation | 4.1% ±4.0 pts | 1.9% | – |
| Walked | 1.2% ±1.9 pts | 3.3% | – |
| Worked from home | 16.8% ±10.4 pts | 17.6% | – |
| Mean travel time to work | 33.2 min ±5.7 | 27.5 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 Marlboro?
1 census tract lies mostly in Marlboro, and 1 more reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9538Ulster County | 3,905 | $94,659 |
| Tract 9539Ulster County | 4,914 | $114,450 |
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 Marlboro) · Census block assignment files
How does Marlboro compare with other places in New York?
Marlboro ranks 340th of 1,623 places in New York with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 816th | 1,657 |
| Residents per square mile | 760th | 1,657 |
| Median household income | 340th | 1,623 |
| Per capita income | 275th | 1,653 |
| Median home value | 436th | 1,637 |
| Median gross rent | 333rd | 1,515 |
| Bachelor's degree or higher | 331st | 1,640 |
| Median age | 669th | 1,654 |
| Owner-occupied share | 987th | 1,639 |
| Work from home | 357th | 1,350 |
| Travel time to work | 317th | 1,652 |
Marlboro's figures with every place in New York (CSV)
Every place in New York, sortable · Compare Marlboro 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 Marlboro?
20 of the 57 figures for Marlboro 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 Marlboro 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' school search.