Consumers' attitudes to current conditions in the U.S. jumped in March, according to a monthly survey out on Tuesday.

The Consumer Confidence Index hit 125.6 in March according to data from The Conference Board, its highest level since December 2000.

Economists expected the Conference Board's consumer confidence index to hit 114 in March, according to a consensus estimate from Reuters.

"Consumers' assessment of current business and labor market conditions improved considerably," Lynn Franco, director of economic indicators at The Conference Board, said in a statement on Tuesday.