Do elderly (retired) persons have a robust representation among your church-goers?

Yes. Elderly very present.

The Naperville campus, I feel, has a good mix of all ages.

From what I understand, the Wheaton campus has on older demographic.

There's a nice representation but not Robust.

Yes, but I wouldn't say it was robust. Maybe about 30% to 40%. Keep in mind, I am speaking of the Naperville campus. I am not certain about the other three campuses.