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Changes in the Consumer Price Index (CPI) data are important macroeconomic indicators to provide an overview of the pattern of public consumption and can show a balance between supply and demand for goods and services. While the inflation figure describes the change (in percent) CPI that occurred in a period of time with the previous time period. This year's CPI and Inflation Book of 2014 can provide information on CPI and its development every month in Semarang City. From the information can be known the level of price stability of goods and services, then can be used as the basis for the procurement of basic needs of society. Observations on regional price developments are becoming increasingly important, especially with regard to the implementation of regional autonomy that is expected to have an impact on the development of regional economic activity.