Actually they are intentionally creating fictional places, signs, etc, to avoid insulting anyone.
would you want to be associated with the serial killer that TV drama portrays them chasing?
BTW if you really want to "Fact check" fact check how many serial killers have been apprehended via a profile, let alone apprehended/shot dead/etc, by FBI profilers.
I'll save you some time researching, the answer is NONE.
(let alone every-damned-week as portrayed on the show)
compared to that one HUGE inconvenient fact the ones you point out are unseen dust bunnies under the sofa of a living room during a Better homes and Gardens photo shoot...
On another forum someone was complaining about the fact that the "Absaroka County" in Wyoming names in the A&E series "Longmier" doesn't exist...
a pet peeve I have is with the various CSI shows, where cops in CSI-Miami freak out like startled parakeets when a citizen they are talking with turns out to be "packing heat"... when in reality Floridians are statically one of the most likely to be LEGALLY armed (Florida was one of the first "Shall Issue" states)
Or on the original CIS (Vegas) when investigating some suspect they mention "they don't have any rifles registered", which shouldn't be a surprise because last I checked Nevada doesn't have a hand-gun registry let alone one for Rifles and shotguns, the scrip writers don't seem to understand that outside of California, New Jersey, New York, Illinois, Maryland, Massachusetts & Connecticut
(and a few others) "Registration" is something only applied to voting and motor vehicles.