Chicago-Gary-Kenosha, IL-IN-WI (CMSA) - Consumer Price Index for All Urban Consumers: All Items in Chicago-Naperville-Elgin, IL-IN-WI (CBSA) was 302.59500 Index 1982-84=100 in July of 2025, according to the United States Federal Reserve. Historically, Chicago-Gary-Kenosha, IL-IN-WI (CMSA) - Consumer Price Index for All Urban Consumers: All Items in Chicago-Naperville-Elgin, IL-IN-WI (CBSA) reached a record high of 302.59500 in July of 2025 and a record low of 102.60000 in January of 1984. Trading Economics provides the current actual value, an historical data chart and related indicators for Chicago-Gary-Kenosha, IL-IN-WI (CMSA) - Consumer Price Index for All Urban Consumers: All Items in Chicago-Naperville-Elgin, IL-IN-WI (CBSA) - last updated from the United States Federal Reserve on April of 2026.