Average sleep times per day, by age and sex Average hours per day Men Women 15 to 19 years 9.4 9.5 20 to 24 years 8.7 8.9 25 to 34 years 8.5 8.7 35 to 44 years 8.3 8.4 45 to 54 years 8.2 8.3 55 to 64 years 8.3 8.2 65 years and over 8.9 8.9 Average sleep time for individuals age 15 and over was 8.6 hours. NOTE: Data include all persons age 15 and over. Data include all days of the week and are annual averages for 2007. SOURCE: Bureau of Labor Statistics