Job prospects for young adults are grim across the U.S., but in some cities they're significantly worse.

Two areas stand out as particularly bad: California and Florida. In a list compiled by the Georgetown Center on Education and the Workforce (CEW) as part of a recent study, six of the 10 cities with the worst employment rates for 20-somethings are in either California or Florida.

Using 2010 data from the U.S. Census and American Community Survey, CEW researchers compiled a list of the 10 cities with the lowest employment rates for 21- to 30-year-olds. The analysis was limited to cities with youth populations of at least 200,000. It found that in the cities with the worst 20-something job prospects, youth employment rates ranged from 63% to 69%, below the national average of 70%.

While 20-somethings make up 23% of the labor force, they represent a striking 36% of the unemployed. By contrast, older adults only constitute 16% of the unemployed.

Don't want to be part of those sad unemployment statistics? Start by steering your job hunt away from these 10 places.