Marion, OH Demographics

A map of Marion's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	28,344	29,036	79.5%	80.7%
Black	3,015	3,740	8.5%	10.4%
Multiracial	2,462	1,539	6.9%	4.3%
Hispanic	1,414	1,339	4.0%	3.7%
Native American/Other	253	188	0.7%	0.5%
Asian	181	157	0.5%	0.4%

Marion, Ohio has an estimated population of 35,669, a less than 1% change from the 35,999 recorded in the 2020 Census. The population is 79.5% White, 8.5% Black, 6.9% Multiracial, 4.0% Hispanic, 0.7% Native American/Other, and 0.5% Asian. This demographic dot map shows the population of Marion, with one dot drawn for each person counted by the Census, color-coded by race.

Marion has become more 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 Marion, that probability was 33.5% in 2020 and 35.5% in the most recent ACS estimates.

Marion is ranked the 38th 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). Marion was ranked the 37th most populous place in the 2020 Census.

Marion's White Population

28,344 residents of Marion, or 79.5% of the population, identify as White. The share of White residents in Marion is slightly higher than in Ohio overall, where 75.8% of the population is White. Marion ranks 1092nd statewide in terms of White residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marion's White population has declined by an estimated 2.4%. White residents' share of Marion's population has decreased from 80.7% to 79.5%.

Marion is less White than neighboring Green Camp (98.9% White), Morral (92.9% White), Waldo (83.2% White), Prospect (97.1% White), and Caledonia (93.1% White).

Marion's Black Population

3,015 residents of Marion, or 8.5% of the population, identify as Black. The share of Black residents in Marion is slightly lower than in Ohio overall, where 12% of the population is Black. Marion ranks 111th statewide in terms of Black residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marion's Black population has declined by an estimated 19.4%. Black residents' share of Marion's population has decreased from 10.4% to 8.5%.

Marion is more Black than neighboring Green Camp (0% Black), Morral (0% Black), Waldo (0% Black), Prospect (0% Black), and Caledonia (1.2% Black).

Marion's Asian Population

181 residents of Marion, or 0.5% of the population, identify as Asian. The share of Asian residents in Marion is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Marion ranks 569th statewide in terms of Asian residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marion's Asian population has grown by an estimated 15.3%. Asian residents' share of Marion's population has remained roughly unchanged at 0.5%.

Marion is more Asian than neighboring Green Camp (0% Asian), Morral (0% Asian), and Caledonia (0.2% Asian). Marion is less Asian than neighboring Waldo (1.1% Asian), and Prospect (0.6% Asian).

Marion's Hispanic Population

1,414 residents of Marion, or 4.0% of the population, identify as Hispanic. The share of Hispanic residents in Marion is comparable to the share in Ohio overall, where 4.8% of the population is Hispanic. Marion ranks 286th statewide in terms of Hispanic residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marion's Hispanic population has grown by an estimated 5.6%. Hispanic residents' share of Marion's population has remained roughly unchanged at 4.0%.

Marion is more Hispanic than neighboring Green Camp (0% Hispanic), Waldo (0% Hispanic), Prospect (0% Hispanic), and Caledonia (0.5% Hispanic). Marion is less Hispanic than neighboring Morral (4.7% Hispanic).

Marion's Native American/Other Population

253 residents of Marion, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marion is comparable to the share in Ohio overall, where 0.5% of the population is Native American/Other. Marion ranks 498th statewide in terms of Native American/Other residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marion's Native American/Other population has grown by an estimated 34.6%. Native American/Other residents' share of Marion's population has remained roughly unchanged at 0.7%.

Marion is more Native American/Other than neighboring Green Camp (0% Native American/Other), Morral (0.5% Native American/Other), Prospect (0.3% Native American/Other), and Caledonia (0% Native American/Other). Marion is less Native American/Other than neighboring Waldo (2.4% Native American/Other).

Marion's Multiracial Population

2,462 residents of Marion, or 6.9% of the population, identify as Multiracial. The share of Multiracial residents in Marion is slightly higher than in Ohio overall, where 4.3% of the population is Multiracial. Marion ranks 483rd statewide in terms of Multiracial residents as a share of the population, out of 1,265 places.

Since the 2020 Census, Marion's Multiracial population has grown by an estimated 60.0%. Multiracial residents' share of Marion's population has increased from 4.3% to 6.9%.

Marion is more Multiracial than neighboring Green Camp (1.1% Multiracial), Morral (1.9% Multiracial), Prospect (2.1% Multiracial), and Caledonia (5% Multiracial). Marion is less Multiracial than neighboring Waldo (13.2% 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.