old, older, oldest
In the NYT today with a dateline of Pittsburgh of course: As Deaths Outpace Births, Cities Adjust, by Sam Roberts and Sean D. Hamill.
But looking forward is a different type of story. Here is a graphic I sometimes point out to folks. From where we are at already and projecting out, there are places that are expecting to see some really phenomenal increases in their elderly populations. By state the projected percentage increase in the elderly (age 65+) population between 2000 and 2030 by state looks like this. And if I were put the Pittsburgh region into that graph, it would come in a full third lower than Pennsylvania overall depending on what you are defining as the region.