Illative is, in the Finnish language, the third of the locative cases with the basic meaning of "into".
The other locative cases in Finnish are:
... 18 to 24, 33.5% from 25 to 44, 23.9% from 45 to 64, and 6.9% who are 65 years of age or older. The median age is 34 years. For every 100 females there are 96.1 males. ...