Union County Demographics

A map of Union County's Population by Race

Union County, Ohio had a population of 62,784 in 2020. It was 84.9% White, 2.0% Black, 6.4% Asian, 2.4% Hispanic, 0.5% Native American/Other, and 3.7% Multiracial. This map presents the population of Union County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Union County is the 39th most populous county of the 88 counties in Ohio.

Union County's White Population

53,287 residents of Union County identify as White, or 84.9%. This makes the White share of the population of Union County slightly larger than the White share of the population of Ohio (75.9% White). Of the 88 counties in Ohio, Union County is ranked #66 in terms of White residents as a share of the population.

Union County is more White than neighboring Delaware County (80.1% White). Union County is less White than neighboring Marion County (85.9% White), Logan County (90.5% White), Madison County (86.2% White), and Champaign County (91.2% White).

Union County's Black Population

1,275 residents of Union County identify as Black, or 2.0%. This makes the Black share of the population of Union County slightly less than the Black share of the population of Ohio (12.3% Black). Of the 88 counties in Ohio, Union County is ranked #41 in terms of Black residents as a share of the population.

Union County is more Black than neighboring Logan County (1.5% Black), and Champaign County (1.8% Black). Union County is less Black than neighboring Marion County (6.2% Black), Delaware County (3.6% Black), and Madison County (6.1% Black).

Union County's Asian Population

4,043 residents of Union County identify as Asian, or 6.4%. This makes the Asian share of the population of Union County roughly similar to the Asian share of the population of Ohio (2.5% Asian). Of the 88 counties in Ohio, Union County is ranked #3 in terms of Asian residents as a share of the population.

Union County is more Asian than neighboring Marion County (0.5% Asian), Logan County (0.7% Asian), Madison County (0.6% Asian), and Champaign County (0.3% Asian). Union County is less Asian than neighboring Delaware County (8.5% Asian).

Union County's Hispanic Population

1,534 residents of Union County identify as Hispanic, or 2.4%. This makes the Hispanic share of the population of Union County roughly similar to the Hispanic share of the population of Ohio (4.4% Hispanic). Of the 88 counties in Ohio, Union County is ranked #38 in terms of Hispanic residents as a share of the population.

Union County is more Hispanic than neighboring Logan County (2.2% Hispanic), and Champaign County (1.7% Hispanic). Union County is less Hispanic than neighboring Marion County (3% Hispanic), Delaware County (3.3% Hispanic), and Madison County (2.9% Hispanic).

Union County's Native American/Other Population

294 residents of Union County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.5%. This makes the Native American/Other share of the population of Union County roughly similar to the Native American/Other share of the population of Ohio (0.6% Native American/Other). Of the 88 counties in Ohio, Union County is ranked #49 in terms of Native American/Other residents as a share of the population.

Union County is less Native American/Other than neighboring Logan County (0.6% Native American/Other), and Champaign County (0.6% Native American/Other).

Union County's Multiracial Population

2,351 residents of Union County identify as Multiracial, or 3.7%. This makes the Multiracial share of the population of Union County roughly similar to the Multiracial share of the population of Ohio (4.3% Multiracial). Of the 88 counties in Ohio, Union County is ranked #46 in terms of Multiracial residents as a share of the population.

Union County is less Multiracial than neighboring Marion County (3.9% Multiracial), Delaware County (4.1% Multiracial), Logan County (4.6% Multiracial), Madison County (3.8% Multiracial), and Champaign County (4.4% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.