Union County Demographics

A map of Union County's Population by Race

Union County, Indiana has an estimated population of 6,985, a slight decrease from the 7,087 recorded in the 2020 Census. The population is 95.1% White, 2.5% Hispanic, 1.3% Multiracial, 0.6% Black, 0.4% Asian, and 0.1% Native American/Other. This demographic dot map shows the population of Union County, with one dot drawn for each person counted by the Census, color-coded by race.

Union has become slightly more racially diverse since the 2020 Census. It is considerably less diverse than Indiana overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Union County, that probability was 8.8% in 2020 and 9.5% in the most recent ACS estimates.

Union County is ranked the 91st most populous county in Indiana, out of 92 counties. Union County was ranked the 91st most populous county in the 2020 Census.

Union County's White Population

6,642 residents of Union County, or 95.1% of the population, identify as White. The share of White residents in Union County is significantly higher than in Indiana overall, where 75.4% of the population is White. Union County ranks 2nd statewide in terms of White residents as a share of the population, out of 92 counties.

Since the 2020 Census, Union County's White population has declined by an estimated 1.8%. White residents' share of Union County's population has remained roughly unchanged at 95.1%.

Union County is more White than neighboring Wayne County (85.7% White), Fayette County (93.7% White), Preble County (95% White), and Butler County (74.6% White). Union County is less White than neighboring Franklin County (95.7% White).

Union County's Black Population

40 residents of Union County, or 0.6% of the population, identify as Black. The share of Black residents in Union County is lower than in Indiana overall, where 9.1% of the population is Black. Union County ranks 79th statewide in terms of Black residents as a share of the population, out of 92 counties.

Since the 2020 Census, Union County's Black population has grown by an estimated 90.5%. Black residents' share of Union County's population has remained roughly unchanged at 0.6%.

Union County is more Black than neighboring Franklin County (0.1% Black). Union County is less Black than neighboring Wayne County (3.8% Black), Fayette County (1.4% Black), Preble County (0.7% Black), and Butler County (8.3% Black).

Union County's Asian Population

30 residents of Union County, or 0.4% of the population, identify as Asian. The share of Asian residents in Union County is slightly lower than in Indiana overall, where 2.6% of the population is Asian. Union County ranks 47th statewide in terms of Asian residents as a share of the population, out of 92 counties.

Since the 2020 Census, Union County's Asian population has declined by an estimated 9.1%. Asian residents' share of Union County's population has remained roughly unchanged at 0.4%.

Union County is more Asian than neighboring Fayette County (0.1% Asian), and Preble County (0.1% Asian). Union County is less Asian than neighboring Franklin County (0.9% Asian), Wayne County (0.9% Asian), and Butler County (4.3% Asian).

Union County's Hispanic Population

178 residents of Union County, or 2.5% of the population, identify as Hispanic. The share of Hispanic residents in Union County is lower than in Indiana overall, where 8.6% of the population is Hispanic. Union County ranks 90th statewide in terms of Hispanic residents as a share of the population, out of 92 counties.

Since the 2020 Census, Union County's Hispanic population has grown by an estimated 140.5%. Hispanic residents' share of Union County's population has increased from 1.0% to 2.5%.

Union County is more Hispanic than neighboring Franklin County (1.2% Hispanic), Fayette County (1.4% Hispanic), and Preble County (1.1% Hispanic). Union County is less Hispanic than neighboring Wayne County (4% Hispanic), and Butler County (7% Hispanic).

Union County's Native American/Other Population

4 residents of Union County, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Union County is comparable to the share in Indiana overall, where 0.5% of the population is Native American/Other. Union County ranks 19th statewide in terms of Native American/Other residents as a share of the population, out of 92 counties.

Since the 2020 Census, Union County's Native American/Other population has declined by an estimated 90.5%. Native American/Other residents' share of Union County's population has decreased from 0.6% to 0.1%.

Union County is less Native American/Other than neighboring Franklin County (0.4% Native American/Other), Wayne County (0.6% Native American/Other), Fayette County (0.2% Native American/Other), Preble County (0.3% Native American/Other), and Butler County (0.6% Native American/Other).

Union County's Multiracial Population

91 residents of Union County, or 1.3% of the population, identify as Multiracial. The share of Multiracial residents in Union County is slightly lower than in Indiana overall, where 3.8% of the population is Multiracial. Union County ranks 86th statewide in terms of Multiracial residents as a share of the population, out of 92 counties.

Since the 2020 Census, Union County's Multiracial population has declined by an estimated 40.1%. Multiracial residents' share of Union County's population has decreased from 2.1% to 1.3%.

Union County is less Multiracial than neighboring Franklin County (1.8% Multiracial), Wayne County (5% Multiracial), Fayette County (3.3% Multiracial), Preble County (2.8% Multiracial), and Butler County (5.3% 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.