 31.00% of all households were made up of individuals and 8.00% had someone living alone who was 65 years of age or older.The average household size was 2.32 and the average family size was 2.93.The county population contained 18.80% under the age of 18, 31.50% from 18 to 24, 23.80% from 25 to 44, 15.80% from 45 to 64, and 10.10% who were 65 years of age or older.