St. Croix County is the fastest growing county in Wisconsin, according to estimates by the U.S. Census Bureau released last Thursday.
The bureau's 2008 numbers for counties, states and metropolitan areas in the country showed St. Croix County had a 30.6 percent increase in population from April 1, 2000, to July 1, 2008.
Dane County increased by 13.2 percent in the same period, followed by Washington County 10.2 percent, Calumet County 10.1 and Kenosha County 10 percent to make up the top five.
In pure numbers, St. Croix County gained 19,332 people for third place. Dane County added 56,179 residents to lead the state, Waukesha County was second with 19,877, Brown County fourth with an additional 18,358, and Kenosha County fifth with 14,886.
St. Croix County's estimated total population on July 1 was 82,487 compared with 63,155 in 2000.
The 13-county metropolitan area of the Twin Cities that includes Hudson and other portions of west central Wisconsin added an estimated 261,060 residents between April 1, 2000, and last July 1, or a little more than 8 percent, according to the bureau's estimates.
The area is the 16th most populous metro region in the country, the same ranking it had in 2000. Seattle-Tacoma was 15th and San Diego 17th.
Wisconsin added 264,259 residents over the period for a 4.9 percent increase. The state's July 1 estimated population was 5,627,967.
Minnesota increased by 300,914 for a total of 5,220,393, or a 5.76 percent rise.