The county estimates have just been released. They are at:
http://www.census.gov/popest/estimates.htmlI see they are continuing with this Excel/CSV crap and not just posting the numbers on their website like they used to. That is very inconvenient of them.
Great news is the fastest growing county is Kendall in Illinois. Good to see a non-Sunbelt place at #1.
If these are accurate, 4 counties will have doubled between 2000 and 2010:
Kendall, IL (suburban Chicago. Why it and Will are growing so fast is a mystery)
Flagler, FL (Small Coastal County in Northeast Florida. Had fastest growth in the entire country in the 1980's)
Pinal, AZ (South of Phoenix, will be hard hit by the recession.)
Rockwall, TX (Small suburban county just east of Dallas)