Montana's largest ancestry groups

German is the biggest ancestry in Montana, claimed by over 28% of residents. Here is a list of the state's 25 largest ancestry groups:

Rank	Ancestry	Montana Estimated Population	Percentage of Total Population
	Total:	990,898	100.0%
1	German	283,255	28.6%
2	Irish	150,609	15.2%
3	English	125,166	12.6%
4	Norwegian	90,371	9.1%
5	American	67,408	6.8%
6	French (except Basque)	40,335	4.1%
7	Italian	34,428	3.5%
8	Swedish	31,048	3.1%
9	Scottish	30,760	3.1%
10	Dutch	26,181	2.6%
11	Polish	25,220	2.5%
12	Scotch-Irish	18,097	1.8%
13	European	15,405	1.6%
14	Danish	12,986	1.3%
15	Russian	10,411	1.1%
16	French Canadian	9,767	1.0%
17	Welsh	9,123	0.9%
18	Czech	8,419	0.8%
19	Swiss	6,473	0.7%
20	Greek	4,854	0.5%
21	British	3,691	0.4%
22	Hungarian	2,648	0.3%
23	Ukrainian	2,333	0.2%
24	Lithuanian	2,224	0.2%
25	Arab	1,916	0.2%

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

C04006 People Reporting Ancestry, 1 year estimates

Please note that the Census Bureau's "People Reporting Ancestry" survey for Montana is based on a limited number of ancestry groups compared to other states.