The average household size was 2.41 and the average family size was 2.97. The county population contained 26.20% under the age of 18, 8.30% from 18 to 24, 26.60% from 25 to 44, 23.80% from 45 to 64, and 15.10% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 96.50 males. For every 100 females age 18 and over, there were 93.40 males. The median income for a household in the county was $36,568, and the median income for a family was $45,185. Males had a median income of $36,244 versus $20,252 for females. The per capita income for the county was $18,696. About 7.20% of families and 9.70% of the population were below the poverty line, including 12.10% of those under age 18 and 9.30% of those age 65 or over. Lincoln County voters generally vote Republican. In only three national elections since 1916 has the county selected the Democratic Party candidate, most recently in 1964 in the midst of Lyndon B. Johnson's national landslide victory.