People tend to check in during these times:
Usually open meter parking out front, usually efficient service
Always a huge line for passports -- even if you just need a photo!
This building is an architectural gem. Stuff like this doesn't get built these days.
No appt needed for a passport, have your papers filled out and ready. In and out in 15!
Bring your own packing tape or be prepared to wait in line and pay $3.50 to buy a roll.
open til 6 pm!
They changed their hours in Nov 2011 and now open at 10am. Not ideal before work!
To go faster, do your postage online or the automated postal machine
If you're here to get a passport.... try to get the application form before entering the line. They'll make you wait TWICE if you don't have the completed form ready.
Be prepared to wait, huge location but always seems to be understaffed.
There are drop mailboxes in the alley behind the Glendale Post Office. Very handy.
Afterhours, I couldn't find an outside mailbox to drop my mail. That made me sad.