Going out on a limb here.
While comparing the in-game township/area names and locations to the real Tahoe google map, I noticed that a central-east coastal township/area of "Glendale" doesn't exist, but "Glenbrook" does.
As i was traveling from the south coast, along the coast-line, to north, and back, I passed through, "Glendale" in zone 210 then into "Skunk" in zone 230.
But more accurately, when looking at the real Tahoe geography, I should have passed through "Glenbrook" then to "Skunk".
Is this is an in-game Mis-Label?
This is a panned out view:
And a more panned-in view: