This is probably the most crowded postal location I've been to in the valley. If you need to speak to a live employee, I would suggest coming right when they open in the morning... otherwise during the day the lines are all the way to the front door. There's an APC machine at the front but there's often a line for that too during the daytime. If you're shipping using the APC, just stop by when the post office is closed because this building is open 24/7.