 The median income for a household in the county was $ 47 @,@ 697 and the median income for a family was $ 59 @,@ 316 . Males had a median income of $ 40 @,@ 884 versus $ 31 @,@ 808 for females . The per capita income for the county was $ 23 @,@ 539 . About 7 @.@ 8 % of families and 10 @.@ 0 % of the population were below the poverty line , including 15 @.@ 7 % of those under age 18 and 5 @.@ 1 % of those age 65 or over . 
