------------------------------------------------------------------------------------------------------------------------- Janesville, WI ------------------------------------------------------------------------------------------------------------------------- 1978-1983: Janesville-Beloit, WI SMSA 1983-2003: Janesville-Beloit, WI MSA 2003-2006: Janesville, WI Metro Area Population History ------------------------------------------------------------------------------------------------------------------------- Component 1950 1960 1970 1980 1990 2000 2005 ------------------------------------------------------------------------------------------------------------------------- Rock County, WI 92,778 113,913 131,970 139,420* 139,510* 152,307* 157,324* ------------------------------------------------------------------------------------------------------------------------- Total - - - 139,420 139,510 152,307 157,324 Percent Change - - - - 0.1% 9.2% 3.3% ------------------------------------------------------------------------------------------------------------------------- Total (as currently defined) 92,778 113,913 131,970 139,420 139,510 152,307 157,324 Percent Change - 22.8% 15.9% 5.6% 0.1% 9.2% 3.3% ------------------------------------------------------------------------------------------------------------------------- Component Change Timeline ---------------------------------------------------------------------------------------- 1950 1960 1970 1980 1990 2000 Component | | | | | | | | | | | | ---------------------------------------------------------------------------------------- Rock County, WI ***************************** ---------------------------------------------------------------------------------------- Population History ------------------------------------------------------------------------------------------------------------------------- City 1950 1960 1970 1980 1990 2000 2005 ------------------------------------------------------------------------------------------------------------------------- Beloit, WI 0 0 0 35,207* 35,573* 35,775* 35,621 Janesville, WI 0 0 0 51,071* 52,133* 59,498* 61,962* Total 0 0 0 86,278 87,706 95,273 61,962 Metro 0 0 0 139,420 139,510 152,307 157,324 Percent 61.9% 62.9% 62.6% 39.4% Principal/Central City Change Timeline ---------------------------------------------------------------------------------------- 1950 1960 1970 1980 1990 2000 City | | | | | | | | | | | | ---------------------------------------------------------------------------------------- Beloit, WI ************************* Janesville, WI ***************************** ---------------------------------------------------------------------------------------- Component Change History ------------------------------------------------------------------------------------------------------------------------- Nov 1978 New SMSA: Janesville-Beloit, WI SMSA Rock County, WI included as original SMSA component Beloit, WI designated as original central city of new SMSA Janesville, WI designated as original central city of new SMSA Jun 2003 Title of Janesville-Beloit, WI MSA changed to Janesville, WI Metro Area Beloit, WI no longer designated as principal/central city -------------------------------------------------------------------------------------------------------------------------