No, except at the beginning of a sentence because it is not a proper noun.
It doesn't need to be unless you're using it as a title.My dad was a letter carrier also known as a postal carrier.Letter Carrier LastName won an award for best postal service.
United Parcel Service
MA is the postal abbreviation for Massachusetts.Note: All State abbreviations are two letters and both are capitalized.
Mississippi is abbreviated as MS by the postal service.MS is the U.S. Postal Service abbreviation for the state of Mississippi. Miss. also is used as an abbreviation for Mississippi.
The form accepted by the United States Postal Service is TER (all caps; no punctuation).
It doesn't need to be unless you're using it as a title.My dad was a letter carrier also known as a postal carrier.Letter Carrier LastName won an award for best postal service.
speed postal service
United States Postal Service
Indian Postal Service was created in 1764.
MA is the postal abbreviation for Massachusetts.Note: All State abbreviations are two letters and both are capitalized.
United States Postal Service and UPS
Postal service
How do you become a contractor for the US postal service?
The United States Postal Service is abbreviated USPS.
United States Postal Service (USPS), FedEx, and UPS are all postal service companies that provide tracking number abilities because the are all delivery service businesses.
United States Postal Service's population is 574,001.
Sir Rowland Hill invented the first postal service