These files give data on Chicago.

1990_Chicago_Community_Area_Summary.xls
2000_Community_Area_Summary.xls
BlueBags.xls
ChicagoCommunityAreaHousingValues.xls
ChicagoCommunityAreaPopulation1990-2000.xls
ChicagoCrime1988-1998.xls
ChicagoCrime1988-2002.xls
ChicagoData.xls
ChicagoHomicides1900-2000.xls
ChicagoPopulation1830-2000.xls
Chicago_Crime_Statistics_1986_to_most_recent.xlsx
Chicago_Population_1830_most_recent.xlsx
CookCountyMunicipalities.xls
MedianHouseholdIncome1990-2000.xls
SelectedChicagoData.xls