Most are in industry. Many workstation vendors have specifically targetted this group in their sales material. Computational chemistry does include some symbol manipulation and some CAD-like graphics, but it uses lots of cpu hours crunching numbers. Most of it is done on workstations. The supercomputer is often the last resort for really big tasks.
Computational chemistry is just one of the activities that is still happily crunching numbers.
What about environemntal modelling, weather forcasting etc. All these activities are growing, not declining. The very complex modelling of all aspects of our complex world will show a vast expansion in the next few decades. While the major of PCs are text manipulators, I estimate a majority of workstations spend a significant part of their time number crunching.