QT-P2 Single Years of Age and Sex: 2010 NOTE: For information on confidentiality protection, nonsampling error, and definitions, see http://www.census.gov/prod/cen2010/doc/sf1.pdf. (r38234) This count has been revised. Revised count: 308,746,065 Revision date: 01-31-2014 For more information, see 2010 Census Count Question Resolution. X Not applicable. Source: U.S. Census Bureau, 2010 Census. Summary File 1, Table PCT12.