CPI-U in 1991
The U.S. Consumer Price Index for All Urban Consumers (CPI-U) averaged 136.2 in 1991 (1982–84 = 100), 4.2% above the 1990 average. From December 1990 to December 1991, prices rose 3.1%. Prices in August 2026 were 2.46 times their 1991 level.
Monthly CPI-U index values, 1991
The highest monthly index in 1991 was 137.9 (December), the lowest 134.6 (January). The 12-month inflation rate ranged from +2.9% in October to +5.7% in January. Historical context — The Great Moderation (1983–2007): Inflation averaged about 3% a year with low volatility.
| Month | CPI-U index | Change from prior month | 12-month change |
|---|---|---|---|
| January 1991 | 134.6 | +0.6% | +5.7% |
| February 1991 | 134.8 | +0.1% | +5.3% |
| March 1991 | 135.0 | +0.1% | +4.9% |
| April 1991 | 135.2 | +0.1% | +4.9% |
| May 1991 | 135.6 | +0.3% | +5.0% |
| June 1991 | 136.0 | +0.3% | +4.7% |
| July 1991 | 136.2 | +0.1% | +4.4% |
| August 1991 | 136.6 | +0.3% | +3.8% |
| September 1991 | 137.2 | +0.4% | +3.4% |
| October 1991 | 137.4 | +0.1% | +2.9% |
| November 1991 | 137.8 | +0.3% | +3.0% |
| December 1991 | 137.9 | +0.1% | +3.1% |
CPI-U, U.S. city average, all items, not seasonally adjusted, 1982–84 = 100 (BLS series CUUR0000SA0). Before 2007 the BLS published the index to one decimal place. Annual average 136.2 as published by the BLS.
CPI 1991: common questions
What was the CPI in 1991?
The CPI-U annual average for 1991 was 136.2 on the 1982–84 = 100 base. Monthly values ranged from 134.6 to 137.9.
What was the inflation rate in 1991?
Measured by annual averages, consumer prices rose 4.2% in 1991; December to December the change was +3.1%.
How much is $100 from 1991 worth today?
About $245.95 in August 2026 prices, based on the change in CPI-U. Use the inflation calculator for other amounts.