This system provides complete documentation of the development of the FY 2007 Median Family Incomes (MFIs) for any area of the country selected by the user. After selecting the desired geography, the user is provided a page containing a detailed account of how the final FY 2007 MFIs were developed starting with the 2000 Census benchmark and including update factors calculated from American Community Survey (ACS) data and in some cases Bureau of Labor Statistics (BLS) data.