Union County Demographics

A map of Union County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	11,688	11,802	88.1%	86.3%
Black	915	1,029	6.9%	7.5%
Multiracial	356	550	2.7%	4.0%
Hispanic	232	188	1.7%	1.4%
Native American/Other	51	67	0.4%	0.5%
Asian	18	32	0.1%	0.2%

Union County, Kentucky has an estimated population of 13,260, a slight decrease from the 13,668 recorded in the 2020 Census. The population is 88.1% White, 6.9% Black, 2.7% Multiracial, 1.7% Hispanic, 0.4% Native American/Other, and 0.1% Asian. 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 less racially diverse since the 2020 Census. It is considerably less diverse than Kentucky 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 24.7% in 2020 and 21.7% in the most recent ACS estimates.

Union County is ranked the 81st most populous county in Kentucky, out of 120 counties. Union County was ranked the 81st most populous county in the 2020 Census.

Union County's White Population

11,688 residents of Union County, or 88.1% of the population, identify as White. The share of White residents in Union County is higher than in Kentucky overall, where 81.5% of the population is White. Union County ranks 91st statewide in terms of White residents as a share of the population, out of 120 counties.

Since the 2020 Census, Union County's White population has remained roughly the same. White residents' share of Union County's population has increased from 86.3% to 88.1%.

Union County is more White than neighboring Webster County (86.6% White). Union County is less White than neighboring Gallatin County (95% White), Crittenden County (93.8% White), Hardin County (95.7% White), and Posey County (93.2% White).

Union County's Black Population

915 residents of Union County, or 6.9% of the population, identify as Black. The share of Black residents in Union County is comparable to the share in Kentucky overall, where 7.6% of the population is Black. Union County ranks 12th statewide in terms of Black residents as a share of the population, out of 120 counties.

Since the 2020 Census, Union County's Black population has declined by an estimated 11.1%. Black residents' share of Union County's population has decreased from 7.5% to 6.9%.

Union County is more Black than neighboring Webster County (4.1% Black), Gallatin County (1.1% Black), Crittenden County (0.4% Black), Hardin County (1.4% Black), and Posey County (0.7% Black).

Union County's Asian Population

18 residents of Union County, or 0.1% of the population, identify as Asian. The share of Asian residents in Union County is comparable to the share in Kentucky overall, where 1.6% of the population is Asian. Union County ranks 75th statewide in terms of Asian residents as a share of the population, out of 120 counties.

Since the 2020 Census, Union County's Asian population has declined by an estimated 43.8%. Asian residents' share of Union County's population has remained roughly unchanged at 0.1%.

Union County is more Asian than neighboring Webster County (0% Asian), and Hardin County (0% Asian). Union County is less Asian than neighboring Gallatin County (0.8% Asian), Crittenden County (0.3% Asian), and Posey County (0.3% Asian).

Union County's Hispanic Population

232 residents of Union County, or 1.7% of the population, identify as Hispanic. The share of Hispanic residents in Union County is slightly lower than in Kentucky overall, where 5% of the population is Hispanic. Union County ranks 89th statewide in terms of Hispanic residents as a share of the population, out of 120 counties.

Since the 2020 Census, Union County's Hispanic population has grown by an estimated 23.4%. Hispanic residents' share of Union County's population has remained roughly unchanged at 1.7%.

Union County is more Hispanic than neighboring Gallatin County (1.2% Hispanic), Hardin County (0.9% Hispanic), and Posey County (1.5% Hispanic). Union County is less Hispanic than neighboring Webster County (7.1% Hispanic), and Crittenden County (1.8% Hispanic).

Union County's Native American/Other Population

51 residents of Union County, 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 Union County is comparable to the share in Kentucky overall, where 0.4% of the population is Native American/Other. Union County ranks 41st statewide in terms of Native American/Other residents as a share of the population, out of 120 counties.

Since the 2020 Census, Union County's Native American/Other population has declined by an estimated 23.9%. Native American/Other residents' share of Union County's population has remained roughly unchanged at 0.4%.

Union County is more Native American/Other than neighboring Webster County (0.3% Native American/Other), Gallatin County (0.1% Native American/Other), and Hardin County (0.2% Native American/Other). Union County is less Native American/Other than neighboring Crittenden County (0.7% Native American/Other), and Posey County (1.4% Native American/Other).

Union County's Multiracial Population

356 residents of Union County, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in Union County is comparable to the share in Kentucky overall, where 3.9% of the population is Multiracial. Union County ranks 29th statewide in terms of Multiracial residents as a share of the population, out of 120 counties.

Since the 2020 Census, Union County's Multiracial population has declined by an estimated 35.3%. Multiracial residents' share of Union County's population has decreased from 4.0% to 2.7%.

Union County is more Multiracial than neighboring Webster County (1.9% Multiracial), Gallatin County (1.8% Multiracial), and Hardin County (1.7% Multiracial). Union County is less Multiracial than neighboring Crittenden County (3.1% Multiracial), and Posey County (2.9% 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.