The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU02000089
Source: US. Bureau of Labor Statistics
Release: Employment Situation
US. Bureau of Labor Statistics, Employment Level: 25 to 34 years [LNU02000089], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/LNU02000089/, August 1, 2015.