It is interesting that Dallas County, Iowa is one of the fastest growing counties (5%). It is the county west of Polk (Des Moines) and must have just the right position to not have much of a population base but right in the suburban growth path.
Between 1890 and 1990 (a century) the county increased from about 20,000 to 30,000, including 0.8% in the 1980s. It increased to about 41,000 in 2000 (+37%), and 66,000 in 2010 (+62%).
I saw some headlines, but that didn't really follow-up that claimed that exurban areas were declining or maybe the growth was slowing. I wonder what examples they used.
The places they used for examples of slowing exurban growth would be like Kendall county IL which was the fastest growing county, and now has dropped way down the list.
