The Census reported that 20,089 people (99.2% of the population) lived in households, 57 (0.3%) lived in non-institutionalized group quarters, and 110 (0.5%) were institutionalized.
The population was spread out with 4,378 people (21.6%) under the age of 18, 1,743 people (8.6%) aged 18 to 24, 5,699 people (28.1%) aged 25 to 44, 5,904 people (29.1%) aged 45 to 64, and 2,532 people (12.5%) who were 65 years of age or older.