U.S. Economic Data Blog

Original comparisons, worked examples and research methods for understanding the U.S. economy. Each article includes a data table, sources and a reproducible download.

September 2026 economic analysis

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How Much Have U.S. Prices Risen Since 2020?

Measure cumulative inflation from January 2020 to August 2026 using headline, food, energy and shelter CPI, with an interactive purchasing-power example.

Research behind the articles

These September editorial articles use approved national and regional acquisitions reviewed on September 30, 2026. The data-review date appears on every article, separately from its editorial date. Monthly, quarterly, daily and annual measures keep their own reference periods. Images illustrate the subjects; source data and formulas support the quantitative analysis.

The articles explain measurement and compare observed histories without turning associations into causal claims. For ongoing series definitions, visit the indicator catalog. For complete geographic comparisons, open the state economic rankings or state economy profiles.

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