Actually the opposite is true: https://www.ers.usda.gov/webdocs/publications/90556/eib-200..... There was a significant rural to urban net migration during boom economies which slowed to zero during both the early 2000s recession and the 2008 recession. And in fact there was a small migration from urban back to rural during the last recession.

The unemployment rate in Iowa peaked at a little more than half the national unemployment rate in 2009-2010.