Iowa is one of the population "exporting" states who fail to hold their own natural increase in population. This and other factors indicate that Iowa isn't competing favorably with many other states on an opportunity basis.
Oest, Irwin W.
"Iowa -- State of Opportunity?,"
Iowa Farm Science: Vol. 13
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol13/iss1/2