 21.80% of all households were made up of individuals and 6.10% had someone living alone who was 65 years of age or older.The average household size was 2.52 and the average family size was 2.93.The county population contained 26.90% under the age of 18, 4.70% from 18 to 24, 27.10% from 25 to 44, 30.30% from 45 to 64, and 11.00% who were 65 years of age or older.