The first digit of a USA ZIP code generally represents a group of U.S. states. The map of the first digit of zip codes above shows they are assigned in order from the north east to the west coast. The first 3 digits of a ZIP code determine the central mail processing facility, also called sectional center facility or "sec center", that is used to process and sort mail.
List of domain same IP 220.127.116.11
US ZIP codes are a type of postal code used within the United States to help the United States Postal Service (USPS) route mail more efficiently. Some still refer to ZIP codes as US postal codes. The term ZIP stands for Zone Improvement Plan.When did ZIP codes come into use?
Zip Codes didn’t come into use until 1963. Their inventor, Robert Aurand Moon, is known as the “Father of ZIP Codes” and was nicknamed “Mr.How are zip codes assigned from east to West?
The sec centers are not open to the public and usually do most sorting overnight. As you can see from the map of the first 3 digits of zip codes, the digits after the first are also generally assigned from east to west. In the map, 0 is closer to white and 9 is much more vivid.What is an extended ZIP code?
An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone.
Alexa Rank Country N/A
Daily Unique Visitors
Monthly Unique Visitors
|Title||Free ZIP code map, zip code lookup, and zip code list||Tips|
|Description||United States Zip Codes provides a free zip code map and list of zip codes by state. Find zip codes by address, zip codes by city, or zip codes by state and compare shipping rates for USPS, UPS, and FedEx.||Tips|
|unitedstateszipcodes.org||TXT||IN||300||Txt: v=spf1 include:_spf.google.com include:sendgrid.net ?all
Entries_0: v=spf1 include:_spf.google.com include:sendgrid.net ?all
|Domain infomation||WHOIS LIMIT EXCEEDED - SEE WWW.PIR.ORG/WHOIS FOR DETAILS