US CPI for West Region
US CPI for West Region stood at 357.13 in Sep 2026, according to U.S. Bureau of Labor Statistics (BLS) — Consumer Price Index (CPI-U). It is one of the indicators in the CPI by region and metropolitan area table (Value · Monthly), with a complete series running from Dec 1966 to Sep 2026. The complete series with an interactive chart, free to download.
This indicator in the CPI by region and metropolitan area table
| Indicator | 09-2026 | 08-2026 | 07-2026 | 06-2026 | 05-2026 | 04-2026 | 03-2026 | 02-2026 | 01-2026 | 12-2025 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| West Region11 | 357.13 | 355.25 | 353.57 | 353.61 | 354.48 | 353.16 | 350.23 | 346.99 | 345.15 | 343.79 | |
| Mountain Division | 139.96 | 139.2 | 138.1 | 138.15 | 138.8 | 138.15 | 137.04 | 135.39 | 134.71 | 134.48 | |
| Pacific Division | 138.38 | 137.66 | 137.19 | 137.19 | 137.4 | 136.94 | 135.79 | 134.7 | 133.97 | 133.31 |
Understanding US CPI for West Region
This broad regional index measures the average change over time in consumer prices across the entire western expanse of the country, encompassing numerous states from the Pacific coast to the Rocky Mountains. It aggregates urban household expenditures on housing, energy, food, and transportation across diverse local markets, while systematically excluding rural populations, commercial investments, and financial assets. Analysts often confuse this macro region with narrower metropolitan gauges or national totals, though it serves as a critical bridge for understanding how vast geographic regions diverge from nationwide inflation averages due to distinct regional supply and housing constraints.
Interpreting this series requires monitoring its scheduled monthly releases while factoring in wide seasonal variations spanning harsh mountain winters and mild coastal climates. Because weather events, regional energy shocks, and localized housing crunches can cause erratic short-term monthly prints, professionals rely on the year-on-year comparison to evaluate sustainable price trends. Users should also note that large regional aggregates undergo periodic methodological reviews and expenditure weight adjustments to reflect long-term demographic shifts across the western states.