 22.90% of all households were made up of individuals and 9.70% had someone living alone who was 65 years of age or older.The average household size was 2.61 and the average family size was 3.07.The county population contained 25.90% under the age of 18, 9.10% from 18 to 24, 28.60% from 25 to 44, 23.70% from 45 to 64, and 12.70% who were 65 years of age or older.