 20.30% of all households were made up of individuals and 8.60% had someone living alone who was 65 years of age or older.The average household size was 2.68 and the average family size was 3.09.The county population contained 25.70% under the age of 18, 7.30% from 18 to 24, 26.80% from 25 to 44, 28.60% from 45 to 64, and 11.60% who were 65 years of age or older.