Census Dots

Jefferson County Demographics

A map of Jefferson County's Population by Race

Race
PopulationPercent
White
490,25162.6%
Black
167,06721.3%
Hispanic
59,0217.5%
Multiracial
33,9794.3%
Asian
26,9443.4%
Native American/Other
5,7070.7%

Jefferson County, Kentucky had a population of 782,969 in 2020. It was 62.6% White, 21.3% Black, 3.4% Asian, 7.5% Hispanic, 0.7% Native American/Other, and 4.3% Multiracial. This map presents the population of Jefferson County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Jefferson County is the most populous county of the 120 counties in Kentucky.

Jefferson County's White Population

490,251 residents of Jefferson County identify as White, or 62.6%. This makes the White share of the population of Jefferson County less than the White share of the population of Kentucky (81.3% White). Of the 120 counties in Kentucky, Jefferson County is ranked #120 in terms of White residents as a share of the population.

Jefferson County is less White than neighboring Bullitt County (91% White), Floyd County (84.5% White), Clark County (78.8% White), Oldham County (85.5% White), and Spencer County (91.1% White).

Jefferson County's Black Population

167,067 residents of Jefferson County identify as Black, or 21.3%. This makes the Black share of the population of Jefferson County larger than the Black share of the population of Kentucky (7.9% Black). Of the 120 counties in Kentucky, Jefferson County is ranked #2 in terms of Black residents as a share of the population.

Jefferson County is more Black than neighboring Bullitt County (1.3% Black), Floyd County (5.3% Black), Clark County (7.7% Black), Oldham County (3.3% Black), and Spencer County (1.5% Black).

Jefferson County's Asian Population

26,944 residents of Jefferson County identify as Asian, or 3.4%. This makes the Asian share of the population of Jefferson County roughly similar to the Asian share of the population of Kentucky (1.6% Asian). Of the 120 counties in Kentucky, Jefferson County is ranked #3 in terms of Asian residents as a share of the population.

Jefferson County is more Asian than neighboring Bullitt County (0.5% Asian), Floyd County (1.2% Asian), Clark County (1.1% Asian), Oldham County (1.7% Asian), and Spencer County (0.5% Asian).

Jefferson County's Hispanic Population

59,021 residents of Jefferson County identify as Hispanic, or 7.5%. This makes the Hispanic share of the population of Jefferson County roughly similar to the Hispanic share of the population of Kentucky (4.6% Hispanic). Of the 120 counties in Kentucky, Jefferson County is ranked #5 in terms of Hispanic residents as a share of the population.

Jefferson County is more Hispanic than neighboring Bullitt County (2.6% Hispanic), Floyd County (3.8% Hispanic), Clark County (6.5% Hispanic), Oldham County (4.8% Hispanic), and Spencer County (2.3% Hispanic).

Jefferson County's Native American/Other Population

5,707 residents of Jefferson County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.7%. This makes the Native American/Other share of the population of Jefferson County roughly similar to the Native American/Other share of the population of Kentucky (0.6% Native American/Other). Of the 120 counties in Kentucky, Jefferson County is ranked #7 in terms of Native American/Other residents as a share of the population.

Jefferson County is more Native American/Other than neighboring Bullitt County (0.5% Native American/Other), Floyd County (0.5% Native American/Other), Oldham County (0.5% Native American/Other), and Spencer County (0.4% Native American/Other).

Jefferson County's Multiracial Population

33,979 residents of Jefferson County identify as Multiracial, or 4.3%. This makes the Multiracial share of the population of Jefferson County roughly similar to the Multiracial share of the population of Kentucky (3.9% Multiracial). Of the 120 counties in Kentucky, Jefferson County is ranked #18 in terms of Multiracial residents as a share of the population.

Jefferson County is more Multiracial than neighboring Bullitt County (4.2% Multiracial), Oldham County (4.2% Multiracial), and Spencer County (4.2% Multiracial). Jefferson County is less Multiracial than neighboring Floyd County (4.7% Multiracial), and Clark County (5.3% Multiracial).

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