United States Postal Service's population is 574,001.
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United States Postal Inspection Service was created in 1772.
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United States Postal Service was created on 1775-07-26.
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United States Postal Service
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Yes the United States Postal Service does deliver overnight mail
to most locations at an extra cost to consumers wanting to use this
service. The United States Postal Service has competitors for this
type of service.