The Tax Foundation has put out a map of the United States, which shows property taxes on owner-occupied housing by state. See how Indiana ranks against other states here:
http://taxfoundation.org/research/show/24078.html
They also have published a listing titled, “Property Taxes on Owner-Occupied Housing, by County, Ranked by Taxes as a Percentage of Household Income, 2005 – 2009 (five-year average),€ which is quite interesting too. You can view it here:
http://taxfoundation.org/taxdata/show/27096.html