Colorado's largest ancestry groups

German-Americans dominate in Colorado, with over 1 in 5 residents claiming German ancestry. Here is a list of the 50 largest ancestral groups in 2010:

Rank	Ancestry	Colorado Estimated Population	Percentage of Total Population
	Total:	5,049,071	100.0%
1	German	1,083,815	21.5%
2	Irish	613,526	12.2%
3	English	546,865	10.8%
4	Italian	251,493	5.0%
5	American	243,886	4.8%
6	French (except Basque)	155,790	3.1%
7	Swedish	131,292	2.6%
8	Scottish	129,386	2.6%
9	Polish	125,929	2.5%
10	Norwegian	112,098	2.2%
11	European	111,207	2.2%
12	Dutch	92,816	1.8%
13	Scotch-Irish	65,306	1.3%
14	Russian	55,723	1.1%
15	Welsh	46,566	0.9%
16	Danish	45,505	0.9%
17	Czech	40,942	0.8%
18	British	28,859	0.6%
19	French Canadian	28,740	0.6%
20	Swiss	24,786	0.5%
21	Austrian	23,429	0.5%
22	Hungarian	21,284	0.4%
23	Canadian	19,044	0.4%
24	Greek	18,331	0.4%
25	Scandinavian	16,560	0.3%
26	African	13,031	0.3%
27	Northern European	12,493	0.2%
28	Finnish	12,318	0.2%
29	Ukrainian	10,234	0.2%
30	Portuguese	9,733	0.2%
31	Lithuanian	9,701	0.2%
32	Slovak	8,594	0.2%
33	Croatian	8,141	0.2%
34	Ethiopian	8,128	0.2%
35	Eastern European	7,474	0.1%
36	Belgian	7,007	0.1%
37	Czechoslovakian	6,682	0.1%
38	Iranian	6,658	0.1%
39	Slovene	6,314	0.1%
40	Yugoslavian	5,841	0.1%
41	Romanian	5,489	0.1%
42	Jamaican	4,789	0.1%
43	Slavic	4,295	0.1%
44	Lebanese	4,282	0.1%
45	Armenian	4,220	0.1%
46	Somalian	4,114	0.1%
47	Other Arab	3,406	0.1%
48	Australian	2,873	0.1%
49	Sudanese	2,708	0.1%
50	Bulgarian	2,486	0.0%

Source: U.S. Census Bureau, 2010 American Community Survey

B04006 People Reporting Ancestry, 1 year estimates