Jefferson 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 780.45K Jefferson County, KY population, 226.76K had Other Groups ancestry (29.06%), 199.06K had Unclassified ancestry (25.51%), and 125.46K had German ancestry (16.08%).

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.

Jefferson County, KY Percentage of Ancestry Population in 2021

Other Groups

Unclassified

German

Irish

English

American

Italian

Subsaharan African

European

French (except Basque)

Jefferson County, KY Population By Ancestry in 2021

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Ancestry	Population	Percent of Pop. (%)
Other Groups	226761	29.06
Unclassified	199061	25.51
German	125463	16.08
Irish	95038	12.18
English	78353	10.04
American	52739	6.76
Italian	20795	2.66
Subsaharan African	18037	2.31
European	14117	1.81
French (except Basque)	14063	1.80
Scottish	13959	1.79
African	11504	1.47
Polish	8928	1.14
Scotch Irish	7822	1.00
Dutch	7550	0.97
Welsh	4729	0.61
British	4657	0.60
Swedish	4285	0.55
Russian	3212	0.41
Norwegian	2708	0.35
Swiss	2534	0.33
West Indian (except Hispanic groups)	2178	0.28
Somali	1821	0.23
Yugoslavian	1732	0.22
Scandinavian	1684	0.22
Hungarian	1602	0.21
Eastern European	1491	0.19
Lebanese	1308	0.17
Czech	1234	0.16
Lithuanian	1191	0.15
French Canadian	1187	0.15
Iraqi	1056	0.14
Haitian	1020	0.13
Portuguese	958	0.12
Arab	936	0.12
Northern European	908	0.12
Canadian	877	0.11
Turkish	851	0.11
Greek	845	0.11
Moroccan	819	0.11
Danish	785	0.10
Slovak	784	0.10
Croatian	757	0.10
Iranian	747	0.10
Austrian	726	0.09
Ukrainian	707	0.09
Albania	643	0.08
Jordanian	560	0.07
Nigerian	511	0.07
Slavic	503	0.06
Sudanese	438	0.06
Belgian	400	0.05
Liberian	377	0.05
Jamaican	377	0.05
Romanian	367	0.05
Czechoslovakian	362	0.05
Ethiopian	344	0.04
Serbian	332	0.04
Afghan	327	0.04
Latvian	325	0.04
Finnish	260	0.03
South African	235	0.03
Barbadian	231	0.03
Palestinian	203	0.03
Syrian	200	0.03
Israeli	178	0.02
Slovene	174	0.02
Brazilian	172	0.02
Trinidadian and Tobagonian	141	0.02
Armenian	133	0.02
Egyptian	122	0.02
Australian	113	0.01
Celtic	112	0.01
Senegalese	110	0.01
Ghanaian	100	0.01
Bulgarian	99	0.01
Bermudan	94	0.01
British West Indian	94	0.01
West Indian	94	0.01
Icelander	90	0.01
Kenyan	82	0.01
Cape Verdean	60	0.01
Alsatian	56	0.01
Pennsylvania German	50	0.01
Cajun	49	0.01
Belizean	37	0.01
Maltese	36	0.01
Luxembourger	34	0.004
US Virgin Islander	27	0.004
Basque	18	0.002
Bahamian	17	0.002
Soviet Union	16	0.002
Assyrian/Chaldean/Syriac	12	0.002
Estonian	12	0.002
New Zealander	8	0.001
Guyanese	6	0.001
Zimbabwean	5	0.001
Ugandan	4	0.001
Dutch West Indian	4	0.001