Which index is widely used to measure changes in the prices paid by U.S. urban consumers?

The index widely used to measure changes in prices paid by U.S. urban consumers is the Consumer Price Index.

The U.S. Bureau of Labor Statistics calculates the CPI from a basket of consumer goods and services, including categories such as food, housing, transportation, medical care, and recreation. The index compares the cost of this representative basket over time and is commonly used to track consumer-price inflation.

The CPI is not a perfect measure of every household’s cost of living. Spending patterns differ between households, new products may appear, and consumers can substitute cheaper goods when relative prices change. Statistical agencies use methods such as updated expenditure weights and quality adjustments to improve measurement.

The CPI is also distinct from the Producer Price Index, which tracks prices received by domestic producers. Core CPI excludes food and energy from the headline measure to reduce the influence of volatile categories, although both measures are widely reported.