Where can I find comparative cost of living data?
For cost-of-living in many US cities and regions, use the ACCRA Cost of Living Index, available in print in Pius Library's Lower Level Periodicals Reading Room at HB235.U6 C58.
Bankrate.com also provides a Cost of Living Calculator for comparing various US cities and metro areas.
See the UBS Price and Earnings Report for a comparison of cities worldwide.
Mercer also ranks 50 cities in its Worldwide Cost of Living Survey.