Mammoth CDP, WY Population By Ancestry in 2021 (ACS-5Yrs)

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 59 Mammoth CDP, WY population, 30 had British ancestry (50.85%), 30 had Swedish ancestry (50.85%), and 11 had English ancestry (18.64%).

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 Wyoming cities and places, and for Wyoming.

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

Data Source: US Census Bureau.

Mammoth CDP, WY Percentage of Ancestry Population in 2021

British

Swedish

English

Irish

German

Polish

Other Groups

Norwegian

French (except Basque)

Italian

Mammoth CDP, WY Population By Ancestry in 2021

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Ancestry	Population	Percent of Pop. (%)
British	30	50.85
Swedish	30	50.85
English	11	18.64
Irish	11	18.64
German	6	10.17
Polish	4	6.78
Other Groups	4	6.78
Norwegian	3	5.09
French (except Basque)	2	3.39
Italian	2	3.39
Scottish	2	3.39
Czech	1	1.70
Dutch	1	1.70
Ukrainian	1	1.70
Unclassified	1	1.70