 30.0% of all households were made up of individuals and 13.4% had someone living alone who was 65 years of age or older.The average household size was 2.62 and the average family size was 3.28.In Helena, the age distribution included 32.5% of the population under the age of 18, 10.0% from 18 to 24, 22.1% from 25 to 44, 20.0% from 45 to 64, and 15.5% who were 65 years of age or older.