Johnson County Demographics

A map of Johnson County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	20,981	21,860	93.9%	96.4%
Multiracial	775	420	3.5%	1.9%
Asian	312	101	1.4%	0.4%
Black	123	42	0.6%	0.2%
Hispanic	110	198	0.5%	0.9%
Native American/Other	33	59	0.1%	0.3%

Johnson County, Kentucky has an estimated population of 22,334, a slight decrease from the 22,680 recorded in the 2020 Census. The population is 93.9% White, 3.5% Multiracial, 1.4% Asian, 0.6% Black, 0.5% Hispanic, and 0.1% Native American/Other. This demographic dot map shows the population of Johnson County, with one dot drawn for each person counted by the Census, color-coded by race.

Johnson has become more 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 Johnson County, that probability was 7.1% in 2020 and 11.6% in the most recent ACS estimates.

Johnson County is ranked the 52nd most populous county in Kentucky, out of 120 counties. Johnson County was ranked the 51st most populous county in the 2020 Census.

Johnson County's White Population

20,981 residents of Johnson County, or 93.9% of the population, identify as White. The share of White residents in Johnson County is considerably higher than in Kentucky overall, where 81.5% of the population is White. Johnson County ranks 10th statewide in terms of White residents as a share of the population, out of 120 counties.

Since the 2020 Census, Johnson County's White population has declined by an estimated 4.0%. White residents' share of Johnson County's population has decreased from 96.4% to 93.9%.

Johnson County is more White than neighboring Martin County (84.7% White), and Elliott County (92.5% White). Johnson County is less White than neighboring Lawrence County (96.6% White), Magoffin County (97.2% White), and Floyd County (95.4% White).

Johnson County's Black Population

123 residents of Johnson County, or 0.6% of the population, identify as Black. The share of Black residents in Johnson County is lower than in Kentucky overall, where 7.6% of the population is Black. Johnson County ranks 117th statewide in terms of Black residents as a share of the population, out of 120 counties.

Since the 2020 Census, Johnson County's Black population has grown by an estimated 192.9%. Black residents' share of Johnson County's population has remained roughly unchanged at 0.6%.

Johnson County is more Black than neighboring Lawrence County (0.1% Black), and Magoffin County (0.1% Black). Johnson County is less Black than neighboring Martin County (7.8% Black), and Elliott County (3.4% Black).

Johnson County's Asian Population

312 residents of Johnson County, or 1.4% of the population, identify as Asian. The share of Asian residents in Johnson County is comparable to the share in Kentucky overall, where 1.6% of the population is Asian. Johnson County ranks 44th statewide in terms of Asian residents as a share of the population, out of 120 counties.

Since the 2020 Census, Johnson County's Asian population has grown by an estimated 208.9%. Asian residents' share of Johnson County's population has increased from 0.4% to 1.4%.

Johnson County is more Asian than neighboring Lawrence County (1.3% Asian), Magoffin County (0.2% Asian), Floyd County (0.4% Asian), Martin County (0% Asian), and Elliott County (0% Asian).

Johnson County's Hispanic Population

110 residents of Johnson County, or 0.5% of the population, identify as Hispanic. The share of Hispanic residents in Johnson County is slightly lower than in Kentucky overall, where 5% of the population is Hispanic. Johnson County ranks 109th statewide in terms of Hispanic residents as a share of the population, out of 120 counties.

Since the 2020 Census, Johnson County's Hispanic population has declined by an estimated 44.4%. Hispanic residents' share of Johnson County's population has remained roughly unchanged at 0.5%.

Johnson County is more Hispanic than neighboring Lawrence County (0.4% Hispanic). Johnson County is less Hispanic than neighboring Magoffin County (0.9% Hispanic), Floyd County (0.9% Hispanic), Martin County (1.7% Hispanic), and Elliott County (1.7% Hispanic).

Johnson County's Native American/Other Population

33 residents of Johnson 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 Johnson County is comparable to the share in Kentucky overall, where 0.4% of the population is Native American/Other. Johnson County ranks 101st statewide in terms of Native American/Other residents as a share of the population, out of 120 counties.

Since the 2020 Census, Johnson County's Native American/Other population has declined by an estimated 44.1%. Native American/Other residents' share of Johnson County's population has remained roughly unchanged at 0.1%.

Johnson County is more Native American/Other than neighboring Lawrence County (0% Native American/Other). Johnson County is less Native American/Other than neighboring Magoffin County (0.2% Native American/Other), Floyd County (0.2% Native American/Other), Martin County (0.8% Native American/Other), and Elliott County (0.4% Native American/Other).

Johnson County's Multiracial Population

775 residents of Johnson County, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Johnson County is comparable to the share in Kentucky overall, where 3.9% of the population is Multiracial. Johnson County ranks 115th statewide in terms of Multiracial residents as a share of the population, out of 120 counties.

Since the 2020 Census, Johnson County's Multiracial population has grown by an estimated 84.5%. Multiracial residents' share of Johnson County's population has increased from 1.9% to 3.5%.

Johnson County is more Multiracial than neighboring Lawrence County (1.6% Multiracial), Magoffin County (1.3% Multiracial), Floyd County (2.6% Multiracial), and Elliott County (2% Multiracial). Johnson County is less Multiracial than neighboring Martin County (5.1% 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.