Gallup: U.S. Unemployment spiked in February to 9.1%

According to a Gallup report released on Thursday, the U.S. unemployment rate, measured without seasonal adjustment, rose to 9.1% in February from 8.6% in January and 8.5% in December.

The 0.5-percentage-point increase from January to February is the largest month-to-month differential "Gallup has recorded in its not-seasonally adjusted measure since December 2010, when the rate rose 0.8 points" from the previous month, Gallup reported.

Additionally, Gallup reported that Underemployment, a measure that combines the percentage of workers who are unemployed with the percentage working part time but wanting full-time work, increased to 19.1% in February from 18.7% in January.