We have 5 tellers but usually only 2 or 3 stations are open. However, if you go to the Post Office no more than 15 minutes before closing time all stations are manned at that time and you will get served very quickly even if there are 20 people in line when you walk in. So, I try to time my trips to go just before closing.
When governments fear people, there is liberty. When the people fear the government, there is tyranny. Thomas Jefferson