Four digits at end of zip code


















The last two digits represent a delivery segment, which might be one floor of an office building, a side of a street, specific departments in an office, or specific Post Office boxes. Locate a Post Office anywhere in the United States. May 1 More and more companies are requiring it on paperwork and forms.

We are a licensed distributor of the U. Have any USPS trivia to share? Leave it in the comments below. Home to stunning views and scenery, Denver is known […]. Some of us like to name a deity, while others might opt for a […]. Facebook YouTube Twitter Instagram.

The Latest. As with most developments in efficiency, change is slow. Comments comments. History Learn Something. About Mark Heald Articles. The 9-digit ZIP Code consists of two sections. The first five digits indicate the destination post office or delivery area. The last 4 digits represent specific delivery routes within delivery areas. It helped divide the country into different "zones" according to how mail was distributed , which accelerated sorting and delivery.

ZIP "Zippy". They also released the ZIP Code jingle:. As the US population has increased and scattered since , it's been necessary to expand on the system, to make room for everybody and their dog.

That's where the "plus 4" part comes in. We're getting ahead of ourselves, though, so let's start with the basics. If you're mailing a letter from Boston to Seattle, the mail carrier in Massachusetts doesn't really care what the street address of the destination is.

It's what you might call "outside his jurisdiction. A postal worker can only cover so much ground on a given day. And since the USPS has a standard of delivering in rain, sleet or snow, that rules out the possibility of doing the service of delivering in stages some today, some tomorrow. That means that any given post office is only servicing what it can reach in a day. ZIP Codes reflect that.



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