According to the census bureau, these are the counties that gained or lost hte most populatoin between 2004 and 2005. Fastest growing counties: Flager, FL -------10.7% Lyon, NV ----------9.6% county website census data 2 builders: Donner Trail Estates , Sendero at Legado Kendall, Il-------9.4% Rockwell, TX------7.74% Washington, UT ---7.66% Nye, NV ----------7.4% county website census data Pinal, AZ --------6.9% Loudoun, VA ------6.8% King George, VA --6.7% Caroline, VA -----6.5% Counties losing populations: Chattahoochee, GA -----6.2% Liberty, GA------------4.9% Lampasas, TX-----------4.7% Washington, GA---------4.3% Norfolk, VA------------2.3% Geary, KS--------------2.2% Choctaw, AL------------2.19% Monroe, FL-------------2.16% Jackson, OK------------2.15% Terrell, GA------------2.0%