Marietta, OH Demographics

A map of Marietta's Population by Race

Marietta, Ohio has an estimated population of 13,203, a slight decrease from the 13,385 recorded in the 2020 Census. The population is 92.8% White, 3.4% Multiracial, 1.5% Hispanic, 1.2% Black, 0.8% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Marietta, with one dot drawn for each person counted by the Census, color-coded by race.

Marietta has become 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 Marietta, that probability was 18.8% in 2020 and 13.8% in the most recent ACS estimates.

Marietta is ranked the 141st 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). Marietta was ranked the 140th most populous place in the 2020 Census.

Marietta's White Population

12,246 residents of Marietta, or 92.8% of the population, identify as White. The share of White residents in Marietta is significantly higher than in Ohio overall, where 75.8% of the population is White. Marietta ranks 767th statewide in terms of White residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marietta's White population has grown by an estimated 1.7%. White residents' share of Marietta's population has increased from 90.0% to 92.8%.

Marietta is more White than neighboring Devola (92.7% White). Marietta is less White than neighboring Williamstown (97.3% White), Boaz (92.9% White), Reno (94.9% White), and Waverly (100% White).

Marietta's Black Population

153 residents of Marietta, or 1.2% of the population, identify as Black. The share of Black residents in Marietta is considerably lower than in Ohio overall, where 12% of the population is Black. Marietta ranks 436th statewide in terms of Black residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marietta's Black population has declined by an estimated 23.5%. Black residents' share of Marietta's population has remained roughly unchanged at 1.2%.

Marietta is more Black than neighboring Williamstown (0% Black), Devola (0% Black), Reno (0.1% Black), and Waverly (0% Black). Marietta is less Black than neighboring Boaz (3% Black).

Marietta's Asian Population

106 residents of Marietta, or 0.8% of the population, identify as Asian. The share of Asian residents in Marietta is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Marietta ranks 272nd statewide in terms of Asian residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marietta's Asian population has declined by an estimated 30.3%. Asian residents' share of Marietta's population has remained roughly unchanged at 0.8%.

Marietta is more Asian than neighboring Williamstown (0% Asian), Boaz (0% Asian), and Waverly (0% Asian). Marietta is less Asian than neighboring Devola (2.6% Asian), and Reno (4.8% Asian).

Marietta's Hispanic Population

194 residents of Marietta, or 1.5% of the population, identify as Hispanic. The share of Hispanic residents in Marietta is slightly lower than in Ohio overall, where 4.8% of the population is Hispanic. Marietta ranks 597th statewide in terms of Hispanic residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marietta's Hispanic population has declined by an estimated 31.4%. Hispanic residents' share of Marietta's population has decreased from 2.1% to 1.5%.

Marietta is more Hispanic than neighboring Williamstown (0.2% Hispanic), Devola (0% Hispanic), Reno (0% Hispanic), and Waverly (0% Hispanic). Marietta is less Hispanic than neighboring Boaz (1.9% Hispanic).

Marietta's Native American/Other Population

56 residents of Marietta, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marietta is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Marietta ranks 323rd statewide in terms of Native American/Other residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marietta's Native American/Other population has declined by an estimated 39.1%. Native American/Other residents' share of Marietta's population has remained roughly unchanged at 0.4%.

Marietta is more Native American/Other than neighboring Devola (0% Native American/Other), Boaz (0% Native American/Other), Reno (0% Native American/Other), and Waverly (0% Native American/Other). Marietta is less Native American/Other than neighboring Williamstown (1% Native American/Other).

Marietta's Multiracial Population

448 residents of Marietta, or 3.4% of the population, identify as Multiracial. The share of Multiracial residents in Marietta is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Marietta ranks 378th statewide in terms of Multiracial residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marietta's Multiracial population has declined by an estimated 27.4%. Multiracial residents' share of Marietta's population has decreased from 4.6% to 3.4%.

Marietta is more Multiracial than neighboring Williamstown (1.4% Multiracial), Boaz (2.1% Multiracial), Reno (0.2% Multiracial), and Waverly (0% Multiracial). Marietta is less Multiracial than neighboring Devola (4.7% 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.