Postal Facts - U.S. Postal Service
Discover fun and interesting geographic facts about the U.S. Postal Service!
The U.S. Postal Service Headquarters building is located in Southwest Washington, D.C., just a few blocks south of the National Mall.
On May 7, 1833, 24-year-old Abraham Lincoln was appointed Postmaster of New Salem, Illinois. Lincoln served until the office was closed May 30, 1836.
Ship Ahoy! The JW Westcott is a 45-foot contract mail boat out of Detroit that delivers mail to passing ships on the Detroit River. The JW Westcott has its own ZIP Code — 48222.
with walk-in freezers
The Peach Springs, AZ, Post Office has walk-in freezers for food destined for delivery by mule train to the bottom of the Grand Canyon.
No troglodytes here! The Stamp Fulfillment Service facility, located in Kansas City, MO, is located in a limestone cave 150 feet beneath the ground. It is the Postal Service’s only facility located underground.
The most unusual delivery method used by the Postal Service is a mule train in Arizona. The mules carry mail, food and supplies down a 9-mile trail to the Havasupai Indians at the bottom of the Grand Canyon.
Ben, this one’s for you!
Franklin is the most common city name — 28 of them — with Clinton, Madison and Washington tied for second (27 each) and Chester, Greenville, Marion and Springfield at third (25). The most common Post Office name is Clinton, with 26 locations, followed by Madison at second (25) and Franklin and Washington tied for third (24).
The longest Main Street in the country is located in Island Park, ID, and is 33 miles long.
Main Street America is here and here and…
The most common street name in the country is Main —21,514 of them — followed by Second with 17,120, Third with 15,948 and First with 14,908.
The ZIP Code with the most street deliveries is Cathedral Station, NY, 10025, with 46,395!
Our Post Office in Utqiagvik, North Slope of Alaska -- formerly Barrow (99723) and Wainwright (99782) -- experiences the coldest temperatures.
The shortest rural delivery route is in Parker, CO. The carrier travels 2.3 miles and delivers to 869 boxes.
The longest rural delivery route is in Clarinda, IA. The carrier travels 181.4 miles daily and delivers to 234 boxes.
easiest to remember
The easiest to remember ZIP Code is 12345, a unique ZIP Code for General Electric in Schenectady, NY.
The highest ZIP Code number is 99950 in Ketchikan, AK.
The lowest ZIP Code number is 00501, unique for the Internal Revenue Service in Holtsville, NY.
Dock-to-dock delivery on the Magnolia River in Alabama. A 15-foot contract mail boat delivers to 176 dock-side mailboxes on a 31-mile stretch of the river.
most needing a bridge
The Post Office in most need of a bridge is in Point Roberts, WA. It can be reached by car only by driving through British Columbia, Canada. Only a boat or float plane can travel directly there.
The second oldest Post Office location is in Castine, ME, from 1833.
The Hinsdale, NH, Post Office (03451) has been located in the same building since 1816.
The largest U.S. Postal Service retail space is the James A. Farley Post Office in New York, NY (10001), at 33,100 square feet.
The smallest Post Office is located in Ochopee, FL (34141) and is 61.3 square feet. The building used to be a storage facility for irrigation pipes of an adjacent tomato farm. It was converted into a Post Office in 1953, after a fire that destroyed a previous Post Office and general store.
The most centered Post Office within the 48 contiguous states is located in Lebanon, KS.
Post Office of them all
The most centered Post Office within all 50 states is located in Belle Fourche, SD.
The northernmost post office location within the 50 states is in Utqiagvik, AK (formerly Barrow).
within 48 states
The northernmost Post Office location within the 48 contiguous states is in Angle Inlet, MN.
within the 50 states
The southernmost Post Office location within the 50 states is located in Naalehu, HI.
within 48 states
The southernmost Post Office location within the 48 contiguous states is located in Key West, FL.
within the 50 states
The easternmost Post Office location in the 50 states is in Lubec, ME.
within the 50 states
The westernmost Post Office location in the 50 states is in Adak, AK.
in the 48 contiguous states
The westernmost Post Office location in the 48 contiguous states is in La Push, WA.
The wettest Post Office is at Mt. Waialeale, near the Kapaa Post Office in Hawaii.
The lowest U.S. Post Office is located in Death Valley, CA (92328), at 282 feet below sea level. This is also the driest and hottest Post Office location.
The highest Post Office in the United States is located in Alma, CO (80420), at 10,578 feet above sea level.
The Eagle Logo, the trade dress of USPS packaging, the Letter Carrier Uniform and the Postal Truck and the following marks are among the many trademarks owned by the United States Postal Service: Click-N-Ship®, Deliver The Win®, EDDM®, ePostage®, Every Door Direct Mail®, Express Mail®, First-Class™, First-Class Mail®, First-Class Package International Service®, Forever®, Global Express Guaranteed®, IMb®, Informed Delivery®, Intelligent Mail®, Label Broker™, Parcel Select®, P.O. Box™, Post Office®, Pony Express®, Postal Inspection Service™, PostalOne!®, Postal Police®, PostalProud®, Priority Mail Express International®, Priority Mail Flat Rate®, Priority Mail International®, Priority: You®, Registered Mail™, Standard Mail®, The Postal Store®, United States Postal Inspection Service®, United States Postal Service®, U.S. Mail®, U.S. Postal Inspector™, U.S. Postal Service®, USPS®, USPS BlueEarth®, USPS Mobile®, USPS Operation Santa®, USPS Tracking®, usps.com®, We are people delivering to people™, ZIP+4® and ZIP Code™. This is not a comprehensive list of all Postal Service trademarks.
Dollar General®, Forest Stewardship Council®, McDonald’s®, National Dog Bite Prevention Week®, Starbucks®, Subway®, Sustainable Forestry Initiative®, The Climate Registry®.
Postal Facts 2022 provides the public with information about the U.S. Postal Service. The facts in this publication may be reproduced for the purpose of stating the fact itself, and in a business, informational or academic context and the like, and in the body of text discussing factual subject matter relevant to the fact being presented. However, these facts may become outdated after publication and seeking the latest information is advised.
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