Village · Ohio
Mariemont, Ohio
Mariemont, village, in Hamilton County, Ohio. Mariemont had 3,499 residents on July 1, 2025 by the Census Bureau's estimate, down 0.6% since 2020; the 2020 Census counted 3,518 and the ACS 2020-2024 5-year estimates put it at 3,474 (±29). GEOID 3947600.
Residents, July 2025 estimate
3,499
Census Bureau estimate (no margin published)
2020 Census count: 3,518 · ACS 2020-2024: 3,474 ±29
Median household income
$152,273
±$46,018 (90% margin)
Ohio: $71,389
Median home value
$607,600
±$118,075 (90% margin)
Ohio: $214,800
Median gross rent
$1,487
±$174 (90% margin)
Ohio: $1,034
Where is Mariemont and what county is it in?
Mariemont is a village in Hamilton County, Ohio. It covers 0.9 square miles of land, 3,935 residents per square mile in 2020.
Mariemont is in the Cincinnati, OH-KY-IN 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 Mariemont, and is it growing?
The Census Bureau estimates that 3,499 people lived in Mariemont on July 1, 2025, down 0.6% since 2020, while Ohio grew 0.9%. The 2020 Census counted 3,518 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 3,474 (±29).
| Measure | Mariemont | Hamilton County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,474 ±29 | 830,774 | −39 |
| Households | 1,366 ±119 | 354,739 | −162 |
| Average household size | 2.49 ±0.21 | 2.29 | no clear change |
| Housing units | 1,477 ±114 | 381,356 | −159 |
Mariemont's population since 2000
From 3,408 in 2000 to 3,499 in 2025: up 2.7%. The 2000, 2010 and 2020 figures are census counts, each for Mariemont 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 Mariemont?
The median resident of Mariemont is 41.1 years old; 29.8% are under 18 and 14.5% are 65 or older. The largest group is non-Hispanic white residents at 95.7%, then non-Hispanic residents of two or more races at 2.0%. 5.2% of residents were born outside the United States.
| Measure | Mariemont | Hamilton County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.1 ±4.1 | 36.9 | no clear change |
| Under 18 years | 29.8% ±4.4 pts | 23.0% | – |
| 65 years and over | 14.5% ±2.9 pts | 16.6% | – |
| Male | 53.7% ±5.0 pts | 48.6% | – |
| Hispanic or Latino (any race) | 0.0% ±1.1 pts | 4.8% | – |
| White alone, not Hispanic | 95.7% ±2.5 pts | 62.3% | no clear change |
| Black or African American alone, not Hispanic | 1.5% ±0.9 pts | 23.9% | – |
| Asian alone, not Hispanic | 0.6% ±0.5 pts | 2.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 2.0% ±1.9 pts | 5.4% | – |
| Some other race alone, not Hispanic | 0.3% ±0.5 pts | 0.6% | – |
| Born outside the United States | 5.2% ±3.1 pts | 6.3% | no clear change |
| Speak a language other than English at home (age 5+) | 1.4% ±1.9 pts | 8.1% | – |
| Civilian veterans (age 18+) | 2.0% ±1.7 pts | 5.5% | – |
| With a disability | 6.7% ±3.0 pts | 13.1% | – |
| No health insurance coverage | 2.3% ±2.1 pts | 5.8% | – |
| High school graduate or higher (age 25+) | 97.8% ±1.7 pts | 92.7% | – |
| Bachelor's degree or higher (age 25+) | 77.3% ±5.4 pts | 41.8% | no clear change |
| Graduate or professional degree (age 25+) | 45.9% ±7.2 pts | 16.9% | – |
| Lived in the same house a year earlier | 86.9% ±6.4 pts | 86.3% | – |
| Moved from another state in the past year | 0.8% ±0.9 pts | 2.3% | – |
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 Mariemont earn?
Half of Mariemont's 1,366 households earn less than $152,273 a year (±$46,018), against $72,470 in Hamilton County and $71,389 in Ohio. In 2015-2019 it was $119,553 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Mariemont | Hamilton County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $152,273 ±$46,018 | $72,470 | no clear change |
| Mean household income | $232,201 ±$43,310 | $106,643 | – |
| Per capita income | $93,027 ±$15,878 | $45,936 | +$23,221 |
| People below the poverty line | 3.9% ±3.3 pts | 15.0% | – |
| Children under 18 below the poverty line | 3.4% ±5.4 pts | 19.8% | – |
| Households receiving SNAP | 2.3% ±2.6 pts | 12.2% | – |
| Households with a computer | 99.5% ±0.8 pts | 95.1% | – |
| Households with a broadband subscription | 99.0% ±1.2 pts | 91.3% | – |
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 Mariemont?
Owners occupy 74.6% of Mariemont's occupied homes and renters 25.4%. The median owner-occupied home is valued at $607,600 by its owner (±$118,075). The median renter pays $1,487 a month including utilities, and 37.1% of renters pay 35% or more of their income on rent.
| Measure | Mariemont | Hamilton County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $607,600 ±$118,075 | $241,900 | no clear change |
| Median gross rent | $1,487 ±$174 | $1,075 | no clear change |
| Renters paying 35% or more of income on rent | 37.1% ±15.6 pts | 40.3% | no clear change |
| Median monthly owner costs, with a mortgage | $3,533 ±$529 | $1,673 | – |
| Owner-occupied homes | 74.6% ±6.4 pts | 59.3% | +14.7 pts |
| Renter-occupied homes | 25.4% ±6.4 pts | 40.7% | – |
| Housing units | 1,477 ±114 | 381,356 | −159 |
| Homeowner vacancy rate | 0.0% ±3.6 pts | 0.6% | – |
| Rental vacancy rate | 6.2% ±9.5 pts | 4.4% | – |
| Single-family detached homes | 59.9% ±7.1 pts | 58.2% | – |
| Mobile homes | 0.0% ±2.5 pts | 0.9% | – |
| Built 2020 or later | 0.0% ±2.5 pts | 0.9% | – |
| Built 2010 to 2019 | 9.6% ±4.0 pts | 4.4% | – |
| Built 1939 or earlier | 36.8% ±7.8 pts | 24.9% | – |
| Households with no vehicle | 2.5% ±2.0 pts | 10.3% | – |
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 many new homes is Mariemont building?
Builders took permits for 5 new housing units in Mariemont in 2025 (1 in single-family houses), 1.4 per 1,000 residents against 2.8 across Ohio.
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 Mariemont work and get to work?
76.0% of Mariemont's workers drive alone and 22.7% work from home. The average trip to work takes 21.7 minutes.
| Measure | Mariemont | Hamilton County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 66.3% ±6.5 pts | 66.2% | – |
| Unemployment rate | 1.9% ±1.5 pts | 5.0% | – |
| Drove alone to work | 76.0% ±7.7 pts | 70.8% | – |
| Carpooled | 0.9% ±1.1 pts | 7.0% | – |
| Public transportation | 0.0% ±2.3 pts | 2.5% | – |
| Walked | 0.0% ±2.3 pts | 2.7% | – |
| Worked from home | 22.7% ±7.6 pts | 15.3% | +11.3 pts |
| Mean travel time to work | 21.7 min ±1.9 | 22.8 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 Mariemont?
1 census tract lies mostly in Mariemont, and 2 more reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 248Hamilton County | 3,610 | $153,026 |
| Tract 47.03Hamilton County | 3,903 | $110,137 |
| Tract 244.01Hamilton County | 5,325 | $165,024 |
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 Mariemont) · Census block assignment files
How does Mariemont compare with other places in Ohio?
By the Census Bureau's July 2025 estimates, Mariemont is the 5,870th-most populous of the 19,476 U.S. incorporated places that have one and the 307th-most populous of 923 in Ohio.
Mariemont ranks 40th of 1,699 places in Ohio with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 307th | 923 |
| Growth 2020-2025 (PEP) | 955th | 1,589 |
| Residents per square mile | 40th | 1,734 |
| Median household income | 40th | 1,699 |
| Per capita income | 11th | 1,729 |
| Median home value | 10th | 1,707 |
| Median gross rent | 102nd | 1,453 |
| Bachelor's degree or higher | 11th | 1,613 |
| Median age | 950th | 1,727 |
| Owner-occupied share | 1,097th | 1,732 |
| Work from home | 95th | 990 |
| Travel time to work | 1,241st | 1,731 |
Mariemont's figures with every place in Ohio (CSV)
Every place in Ohio, sortable · Compare Mariemont 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 Mariemont?
22 of the 57 figures for Mariemont 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 Mariemont 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 Mariemont.