Casper Mountain 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 870 Casper Mountain CDP, WY population, 318 had Other Groups ancestry (36.55%), 156 had German ancestry (17.93%), and 116 had Irish ancestry (13.33%).

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.

Casper Mountain CDP, WY Percentage of Ancestry Population in 2021

Other Groups

German

Irish

Welsh

American

Unclassified

English

Italian

French (except Basque)

Scotch Irish

Casper Mountain CDP, WY Population By Ancestry in 2021

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Ancestry	Population	Percent of Pop. (%)
Other Groups	318	36.55
German	156	17.93
Irish	116	13.33
Welsh	92	10.58
American	82	9.43
Unclassified	64	7.36
English	56	6.44
Italian	49	5.63
French (except Basque)	28	3.22
Scotch Irish	25	2.87
European	20	2.30
Polish	18	2.07
Norwegian	16	1.84
Dutch	13	1.49
Czech	10	1.15
British	9	1.03
Hungarian	8	0.92
Swedish	7	0.81
Scottish	6	0.69