Johnson County, KY Population By Ancestry in 2021 (ACS-5Yrs)

Updated on April 15, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 22.79K Johnson County, KY population, 8.27K had Unclassified ancestry (36.30%), 6.31K had American ancestry (27.70%), and 2.80K had Irish ancestry (12.26%).

The chart below shows the top 10 ancestry groups by percentage, and the table below shows both the population and percentages for many ancestry groups.

You can see similar information for other Kentucky counties, and for Kentucky.

NB: People could belong to one or more ancestry groups.

Data Source: US Census Bureau.

Johnson County, KY Percentage of Ancestry Population in 2021

Unclassified

American

Irish

English

Other Groups

German

Scottish

Scotch Irish

Polish

British

Johnson County, KY Population By Ancestry in 2021

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Ancestry	Population	Percent of Pop. (%)
Unclassified	8273	36.30
American	6313	27.70
Irish	2795	12.26
English	2493	10.94
Other Groups	2027	8.89
German	1855	8.14
Scottish	294	1.29
Scotch Irish	265	1.16
Polish	155	0.68
British	138	0.61
European	138	0.61
Swiss	125	0.55
French (except Basque)	104	0.46
Welsh	89	0.39
Italian	76	0.33
Dutch	69	0.30
Russian	37	0.16
Slovak	27	0.12
Pennsylvania German	17	0.08
Maltese	13	0.06
Brazilian	12	0.05
Subsaharan African	12	0.05
Nigerian	12	0.05
Swedish	11	0.05
Eastern European	8	0.04
Ukrainian	7	0.03