Question: how long does it take to mail a letter within the same zip code?
Answer: 90% of the time mail sent and to be delivered in the same zip code will take 1 day depending on the time of day you drop it at the post office. If you drop it off at the post office prior to 12:00 pm it will be delivered the next day, that's 90% of the time. The remaining 10% of the time, it will take 2 days.