In the Mountain View CDP the population was spread out, with 29.6% under the age of 18, 8.8% from 18 to 24, 12.4% from 25 to 34, 18.0 from 35 to 49, 21.5% from 50 to 64, and 9.7% 65 or older. For every 100 females, there were 96.9 males. For every 100 males there were 103.2 females.
In the Mountain View CDP the population was spread out, with 29.6% under the age of 18, 8.8% from 18 to 24, 12.4% from 25 to 34, 18.0 from 35 to 49, 21.5% from 50 to 64, and 9.7% 65 or older. For every 100 females, there were 96.9 males. For every 100 males there were 103.2 females.