Technically, variables of this type are considered Static constants (static const). When executing, these would be created in ROM. As you know, PC’s don’t have ROM, so the stack is mimicked in RAM. This mimicking is actually the process of grouping the static constant variables with other variables in RAM that are static but are not constant. Essentially, from what I understand, they don’t really get their own section because there isn’t ROM for them.
If you want to be more specific in the placing of your variables, consider using register variables (register int yourvar;) as this memory is allocated within the CPU itself for very quick access.