As a neutral arbiter, perhaps Wikipedia can shed some light:
Redlining is the practice of denying, or increasing the cost of services such as banking, insurance, access to jobs, access to health care, or even supermarkets to residents in certain, often racially determined, areas.
We have a geographically contiguous area the residents of which experience increased cost of insurance. As for the technicality of whether this is redlining, that does seem to about nail it, it would seem to me. It's not emblematic, since there is no discrimination on the basis of race.

If I am lumped in with many of Michigan's moronic 19% for reasons lacking in nuance to the point of profanity [[I lived in downtown and walked to work, just how risky could I have been) because we shared a post office, that's basically redlining.