Pennsylvania Postal Code

PA is the state of Pennsylvania's US postal abbreviation. To guarantee that mail is delivered to the right state, this abbreviation is often used when addressing envelopes. The postal abbreviations CA for California, NY for New York, and FL for Florida are some further instances.

Since the beginning of the American postal service, postal abbreviations have been used. The use of abbreviations allowed address labels to be smaller and simpler to see and write in the days when mail was often carried by horse-drawn carriages.

The first Postmaster General of the United States, Benjamin Franklin, advocated the idea of using postal abbreviations for the names of states in mail addressing in the 1790s, which is the first recorded usage of postal abbreviations in the country. These acronyms were derived from those that were often seen in British postal addresses at the period.

The list of postal abbreviations has altered and developed through time as additional states have been admitted to the Union and as postal regulations have been amended. Today, official postal abbreviations that are used to address mail are kept on file by the United States Postal Service (USPS). Periodically, these acronyms are updated to reflect any modifications or additions to the list of states and other geographic areas.

There are a variety of informal abbreviations that are used to address mail in addition to the official postal abbreviations. These abbreviations may be used by persons or organizations that choose to use their own abbreviations for postal addresses or by others who are not familiar with the official abbreviations.