Seffner CDP, FL Population By Ancestry in 2021 (ACS-5Yrs)

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 8.48K Seffner CDP, FL population, 3.76K had Other Groups ancestry (44.32%), 1.25K had Unclassified ancestry (14.79%), and 845 had Irish ancestry (9.96%).

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

You can also see similar information for other Florida cities and places, and for Florida.

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

Data Source: US Census Bureau.

Seffner CDP, FL Percentage of Ancestry Population in 2021

Other Groups

Unclassified

Irish

German

American

English

Subsaharan African

African

French (except Basque)

Belgian

Seffner CDP, FL Population By Ancestry in 2021

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Ancestry	Population	Percent of Pop. (%)
Other Groups	3760	44.32
Unclassified	1255	14.79
Irish	845	9.96
German	817	9.63
American	729	8.59
English	584	6.88
Subsaharan African	470	5.54
African	442	5.21
French (except Basque)	233	2.75
Belgian	211	2.49
West Indian (except Hispanic groups)	167	1.97
Italian	161	1.90
Polish	154	1.82
French Canadian	146	1.72
Scottish	93	1.10
Greek	73	0.86
West Indian	71	0.84
Jamaican	70	0.83
Swedish	64	0.75
European	46	0.54
Guyanese	44	0.52
British	41	0.48
Russian	29	0.34
Nigerian	28	0.33
Norwegian	27	0.32
Latvian	26	0.31
British West Indian	26	0.31
Northern European	21	0.25
Scotch Irish	18	0.21
Swiss	15	0.18
Romanian	13	0.15
Lithuanian	12	0.14
Czech	11	0.13
Palestinian	10	0.12
Canadian	9	0.11
Dutch	9	0.11
Portuguese	9	0.11
Scandinavian	9	0.11
Ukrainian	9	0.11
Bulgarian	7	0.08
Slovak	6	0.07
Welsh	6	0.07