According to recent data from the U.S. Bureau of Labor Statistics, in , the United State not seasonally adjusted Consumer Price Index for all Urban Consumers (CPI-U): Gasoline, unleaded regular for St Louis, MO-IL was 0;

The US Inflation Rate of Gasoline, unleaded regular for St Louis, MO-IL in was %, 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: Gasoline, unleaded regular for St Louis, MO-IL from to .

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.