Mariemont, OH Demographics

A map of Mariemont's Population by Race

Mariemont, Ohio has an estimated population of 3,474, a slight decrease from the 3,518 recorded in the 2020 Census. The population is 95.7% White, 2.0% Multiracial, 1.5% Black, 0.6% Asian, 0.3% Native American/Other, and 0.0% Hispanic. This demographic dot map shows the population of Mariemont, with one dot drawn for each person counted by the Census, color-coded by race.

Mariemont has become considerably less racially diverse since the 2020 Census. It is considerably less diverse than Ohio overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Mariemont, that probability was 16.0% in 2020 and 8.4% in the most recent ACS estimates.

Mariemont is ranked the 368th most populous place in Ohio, out of 1,265 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Mariemont was ranked the 361st most populous place in the 2020 Census.

Mariemont's White Population

3,324 residents of Mariemont, or 95.7% of the population, identify as White. The share of White residents in Mariemont is significantly higher than in Ohio overall, where 75.8% of the population is White. Mariemont ranks 611th statewide in terms of White residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Mariemont's White population has grown by an estimated 3.2%. White residents' share of Mariemont's population has increased from 91.6% to 95.7%.

Mariemont is more White than neighboring Madison Place (64.4% White), Fairfax (91.4% White), Newtown (88.6% White), and Turpin Hills (82.9% White). Mariemont is less White than neighboring Plainville (100% White).

Mariemont's Black Population

52 residents of Mariemont, or 1.5% of the population, identify as Black. The share of Black residents in Mariemont is considerably lower than in Ohio overall, where 12% of the population is Black. Mariemont ranks 673rd statewide in terms of Black residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Mariemont's Black population has grown by an estimated 116.7%. Black residents' share of Mariemont's population has increased from 0.7% to 1.5%.

Mariemont is more Black than neighboring Fairfax (1.3% Black), and Plainville (0% Black). Mariemont is less Black than neighboring Madison Place (26.5% Black), Newtown (3.5% Black), and Turpin Hills (5.6% Black).

Mariemont's Asian Population

20 residents of Mariemont, or 0.6% of the population, identify as Asian. The share of Asian residents in Mariemont is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Mariemont ranks 196th statewide in terms of Asian residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Mariemont's Asian population has declined by an estimated 67.2%. Asian residents' share of Mariemont's population has decreased from 1.7% to 0.6%.

Mariemont is more Asian than neighboring Madison Place (0% Asian), Fairfax (0% Asian), and Plainville (0% Asian). Mariemont is less Asian than neighboring Newtown (1.9% Asian), and Turpin Hills (3.6% Asian).

Mariemont's Hispanic Population

0 residents of Mariemont, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Mariemont is slightly lower than in Ohio overall, where 4.8% of the population is Hispanic. Mariemont ranks 518th statewide in terms of Hispanic residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Mariemont's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Mariemont's population has decreased from 2.4% to 0.0%.

Mariemont is less Hispanic than neighboring Fairfax (4.2% Hispanic), Newtown (2% Hispanic), and Turpin Hills (3.4% Hispanic).

Mariemont's Native American/Other Population

9 residents of Mariemont, or 0.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Mariemont is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Mariemont ranks 942nd statewide in terms of Native American/Other residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Mariemont's Native American/Other population has grown by an estimated 28.6%. Native American/Other residents' share of Mariemont's population has remained roughly unchanged at 0.3%.

Mariemont is more Native American/Other than neighboring Madison Place (0% Native American/Other), Fairfax (0% Native American/Other), Plainville (0% Native American/Other), and Newtown (0.1% Native American/Other). Mariemont is less Native American/Other than neighboring Turpin Hills (0.8% Native American/Other).

Mariemont's Multiracial Population

69 residents of Mariemont, or 2.0% of the population, identify as Multiracial. The share of Multiracial residents in Mariemont is slightly lower than in Ohio overall, where 4.3% of the population is Multiracial. Mariemont ranks 796th statewide in terms of Multiracial residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Mariemont's Multiracial population has declined by an estimated 43.4%. Multiracial residents' share of Mariemont's population has decreased from 3.5% to 2.0%.

Mariemont is more Multiracial than neighboring Plainville (0% Multiracial). Mariemont is less Multiracial than neighboring Madison Place (9.1% Multiracial), Fairfax (3.1% Multiracial), Newtown (3.9% Multiracial), and Turpin Hills (3.7% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.