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C2ER Cost of Living Data

C2ER calculates the Cost of Living Index (COLI) by measuring consumer expenditure amounts for the six major categories and creating weights or ratios for the amount each item contributes to the overall index. The Cost of Living Index Committee has adopted the weights based on data from the U.S. Bureau of Labor Statistics’ 2004 Consumer Expenditure Survey, using the data on the proportional distribution of expenditures by households in which the reference person has a professional or managerial occupation and by households in the upper quintile of income. For urban areas where there is less reported data, C2ER develops estimated prices in order to have a complete set of observations.

How does EMSI COLI data differ from C2ER?
C2ER reports the cost of living index at the county level for the entire US. For geographies larger than a single county, Emsi creates an index by using the averages of the comprised counties weighted by each county’s population. This way the index more appropriately represents the region’s cost of living. Emsi applies the county COLI from the county to the ZIPs within that county.

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