Iowa State Immigration

Population

Iowa's population increased from 2,757,537 in 1960 to 3,049,883 in 2010. That was an increase of 10.6 percent.

The foreign-born (FB) population increased from 56,278 in 1960 to 139,477 in 2010. That was an increase of 147.8 percent. The foreign-born share changed from 2.0 percent to 4.6 percent.

The share of the overall population that was native-born (NB) increased by 7.6 percent.

	Iowa: 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. Natural change (B-D) was the primary factor in population increase in all three periods while NDM was a consistent negative factor.

The second chart shows the same data but with an adjustment to reflect births to immigrants shifted to NIM. In it, B-D continued to be the principal source of added population in the first two periods, replaced by NIM in the most recent period.

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

		 B-D	 NDM	NIM						B-D	 NDM	NIM	
	90-'99	81.4%	 neg.	18.6%					90-'99	69.1%	 neg.	30.9%
	00-'09	74.5%	 neg.	25.5%					00-'09	57.7%	 neg.	42.3%
	10-'14	67.7%	 neg.	32.3%					10-'14	48.3%	 neg.	51.7%

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