 As of the 2010 United States Census , there were 39 @,@ 364 people , 15 @,@ 192 households , and 11 @,@ 031 families residing in the county . The population density was 81 @.@ 2 inhabitants per square mile ( 31 @.@ 4 / km2 ) . There were 16 @,@ 534 housing units at an average density of 34 @.@ 1 per square mile ( 13 @.@ 2 / km2 ) . The racial makeup of the county was 97 @.@ 4 % white , 0 @.@ 5 % black or African American , 0 @.@ 4 % Asian , 0 @.@ 2 % American Indian , 0 @.@ 5 % from other races , and 1 @.@ 0 % from two or more races . Those of Hispanic or Latino origin made up 1 @.@ 5 % of the population . In terms of ancestry , 31 @.@ 1 % were German , 16 @.@ 5 % were American , 12 @.@ 8 % were Irish , and 12 @.@ 8 % were English . 
