Volunteers from chambers of commerce, economic development organizations, and other similar institutions collect the data. All items are priced in each place at a specified time and according to standardized specifications. Those persons wishing to become a collection agent should contact the Subscription Office. Inquiries are then forwarded to the appropriate regional coordinator. This will give the user a percentage differential which can be used to then compute such things as salary changes.
Inflation is price change over time.
The consumer price index is a measurement of inflation. This data is compiled by and available from the U.S. Department of Labor's Bureau of Labor Statistics. Currently the full data set is available only through the printed publication. Through this site a user can obtain information on the top 20 to 25 cities as well as general information on the Index and ordering. Data requests should be directed to a local chamber of commerce or public library.