How long should a package take that is sent from West LA to be delivered to downtown LA?  According to this USPS package tracking, six days.  Per the tracking, it goes from West LA (90025) to Long Beach (90809) to Central Alameda (90052) to McArthur/Westlake (90057) to Westlake/Financial District (90017) back to McArthur/Westlake (90057) to downtown LA (90014) and then finally delivered.

Why does it even go to Long Beach?  And why does it bounce back and forth around DTLA like that?