 19.50% of all households were made up of individuals and 7.70% 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 3.06.The county population contained 27.20% under the age of 18, 7.50% from 18 to 24, 29.00% from 25 to 44, 24.60% from 45 to 64, and 11.80% who were 65 years of age or older.