A post office is a customer service facility forming part of a national postal system.[1] Post offices offer mail-related services such as acceptance of letters and parcels; provision of post office boxes; and sale of postage stamps, packaging, and stationery. In addition, many post offices offer additional services: providing and accepting government forms (such as passport applications), processing government services and fees (such as road tax), and banking services (such as savings accounts and money orders).[2] The chief administrator of a post office is a postmaster.
Prior to the advent of postal and ZIP codes, postal systems would route items to a specific post office for receipt or delivery. In 19th-century America, this often led to smaller communities being renamed after their post offices, particularly after the Post Office Department ceased to permit duplicate station names within a state.