Gallup calculates that unemployment rose by 0.5 percent during the month of February, the largest month-to-month increase since December 2010.
U.S. unemployment, as measured by Gallup without seasonal adjustment, increased to 9.1% in February from 8.6% in January and 8.5% in December.
The 0.5-percentage-point increase in February compared with January is the largest such month-to-month change Gallup has recorded in its not-seasonally adjusted measure since December 2010, when the rate rose 0.8 points to 9.6% from 8.8% in November. A year ago, Gallup recorded a February increase of 0.4 percentage points, to 10.3% from 9.9% in January 2011.
In addition to the 9.1% of U.S. workers who are unemployed, 10.0% are working part time but want full-time work. This percentage is similar to the 10.1% in January, but is higher than the 9.6% of February 2011.