Postal Service is Edgewood Avenue, which is many blocks farther south of North Avenue, running east from the downtown city center at Five Points. Because of this, the street numbers in midtown (the only part of the city that uses them) do not match the block numbers.
The location of the post office on Edgewood Avenue is positioned more to the south than North Avenue, extending eastward from downtown at Five Points. As a result, there is an inconsistency between street addresses and block numbers in midtown.