Montana State Immigration

Population

Montana's population increased from 674,767 in 1960 to 990,898 in 2010. That was an increase of 46.9 percent.

The foreign-born (FB) population decreased from 30,646 in 1960 to 20,031 in 2010. That was a decrease of 34.6 percent. The foreign-born share changed from 4.5 percent to 2.0 percent.

The share of the overall population that was native-born (NB) increased by 50.5 percent.

	Montana: Population  1960-2010

Sources of Population Change

The primary sources of population change are:

Natural Change [Births minus Deaths or B-D];
Net Domestic Migration [NDM - movement between states]; and
Net International Migration [NIM - movement into and out of the country].
There is also a residual "other" amount that isn't placed in one of those three categories.

The first chart below shows the three population change factors for three periods adjusted for annual average amounts. Domestic migration (NDM) was the dominant factor in population increase, accounting more than half of population increase in all periods.

The second chart shows the same data but with an adjustment to reflect births to immigrants shifted to NIM. In it, NDM remained the main factor adding population in all periods.

	Montana: Sources of Population Change 1990-2014 		Montana: Sources of Population Change (Adjusted) 1990-2014

		 B-D	  NDM	 NIM						B-D	NDM	NIM	
	90-'99  40.2%	56.6%  3.2%					90-'99	36.6%  56.6%    6.9%
	00-'09	42.0%	53.9%  4.1%					00-'09	37.3%  53.9%    8.8%
	10-'14	39.0%	51.4%  9.6%					10-'14	34.1%  51.4%   14.5%

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