According to recent data from the U.S. Bureau of Labor Statistics, in February 2023, the United State not seasonally adjusted Consumer Price Index for all Urban Consumers (CPI-U): Transportation for Chicago-Naperville-Elgin, IL-IN-WI was 228.11; it rose by 1.1% compared to January 2023.

The US Inflation Rate of Transportation for Chicago-Naperville-Elgin, IL-IN-WI in February 2023 was 4.0%, not seasonally adjusted. The inflation rate represents the percent change of the CPI-U compared to a year ago.

The charts and table below shows the United States not seasonally adjusted historical Consumer Price Index and Inflation Rate for All Urban Consumers: Transportation for Chicago-Naperville-Elgin, IL-IN-WI from January 2002 to February 2023.

The Consumer Price Index (CPI) measures the change in prices paid by consumers for goods and services. The CPI of all urban consumers (CPI-U) reflects the spending patterns of all urban consumers which represents about 93 percent of the total US population. The CPI-U is based on the expenditures of almost all residents of urban or metropolitan areas, including professionals, the self-employed, the poor, the unemployed, and retired people, as well as urban wage earners and clerical workers.