Prevalence of anogenital warts among adolescent females aged 15–19 years declined non-significantly during 2006–2008, and then significantly decreased (APC=-14.1) through 2014. Among women aged 20–24 years, genital wart prevalence was stable during 2006–2009, but declined significantly during 2009–2014 (APC=-12.9). Prevalence among women aged 25–29 years also decreased significantly from 2009–2014 (APC=-6.0). Prevalence increased or was stable during the entire period for women aged 30–39 years. Among males, anogenital wart prevalence increased significantly during 2006–2009 for all age groups except those aged 15–19 years. From 2009 to 2014, rates decreased somewhat among male adolescents aged 15–19 years (APC=-5.4), but decreased significantly among men aged 20–24 years (APC=-6.5). Among those aged 25–29 years, prevalence declined non-significantly during 2010–2014 (APC=-1.7); prevalence increased or was stable throughout the entire period for men aged 30–39 years.