They must be in millions ... if not for sure in thousands.... and many more would be springing up each day...
It employed 790,000 personnel in 2003, divided into offices, processing centers, and actual post offices. From wikipedia: http://en.wikipedia.org/wiki/United_States_Post_Office
Post Offices
No, US post offices do not sell Canadian stamps. Canadian stamps are issued by Canada Post and can typically be purchased at Canadian post offices or through their official website. If you need to send mail to Canada, you can use US postage or go to a local retailer that sells international stamps.
The plural is Post Offices
155000
1189
Quite a few! There are over 187,000 listings for post offices in the United States.
Because it is a Federal holiday, US Government offices, local and state offices, post offices, courts, etc.
There are currently 26 US Post Offices listed within the city limits of Denver. Some of the, however, are not stand-alone buildings and are located inside of other businesses.
Many post offices offer fingerprinting services. It is recommended to check with your local post office to see if they provide this service.
congress can establish post offices
The top three US post offices are in Queen Village, Philadelphia, PA, Detroit, MI and finally Lincoln Park, Chicago, IL. These three post offices are the top in the United States of America.