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ZIP codes are a type of postal code used by the United States Postal Service to route mail. First introduced by the Post Office Department in 1963, ZIP stands for Zone Improvement Plan, and was initially established to help the USPS deliver packages. Today it is used to ship almost anything to an address.

So what do the extra numbers mean? These last 4 digits represent specific delivery routes within delivery areas. This extra detail means an even more precise matching to a more granular level. It could represent a handful of houses on one side of a street, or even a single building that receives a high volume of mail.

The USPS Web Tools Application Program Interfaces (APIs) allow developers of web-based and shrink-wrapped applications access to the online services of the United States Postal Service (USPS). They provide easy access to shipping information and services for your customers.

The standard ZIP code notation used by the United States Postal service uses five digits to identify a delivery area. An example of a standard US ZIP code is 90210.

You are right that the United States Postal Service writes “ZIP Code” with a capital C—and ZIP in all caps. You're also right about us. Though CMOS doesn't specifically rule on how to capitalize the term, it has rendered it as “zip code” (all lowercase) since it first appeared in the Manual in 1982 (in the 13th ed.).

A ZIP code API, also known as a ZIP code lookup, makes it possible to programmatically look up information using a ZIP code as a unique identifier. In North America, all major shipping carriers including USPS, Canada Post, FedEx, DHL, and UPS maintain various APIs with corresponding documentation.

Indian Pincode or Postal code API provides the 29 states and seven territories pincodes data with latitude and longitude details. You can get the nearby area of pincodes, pincodes by districts, distances between two pincodes, nearby area and distance between pincodes by latitude and longitude information.

Yes, when using a ZIP+4 ZIP Code, the number must consist of five digits, a hyphen (or dash), and four digits. Improperly labeled mailpieces may progress slower through the mail system and may be returned to sender if the United States Postal Service® is unable to deliver the item.

ZIP codes are a type of postal code used by the United States Postal Service to route mail. First introduced by the Post Office Department in 1963, ZIP stands for Zone Improvement Plan, and was initially established to help the USPS deliver packages. Today it is used to ship almost anything to an address.

So what do the extra numbers mean? These last 4 digits represent specific delivery routes within delivery areas. This extra detail means an even more precise matching to a more granular level. It could represent a handful of houses on one side of a street, or even a single building that receives a high volume of mail.

The USPS Web Tools Application Program Interfaces (APIs) allow developers of web-based and shrink-wrapped applications access to the online services of the United States Postal Service (USPS). They provide easy access to shipping information and services for your customers.

The standard ZIP code notation used by the United States Postal service uses five digits to identify a delivery area. An example of a standard US ZIP code is 90210.

You are right that the United States Postal Service writes “ZIP Code” with a capital C—and ZIP in all caps. You're also right about us. Though CMOS doesn't specifically rule on how to capitalize the term, it has rendered it as “zip code” (all lowercase) since it first appeared in the Manual in 1982 (in the 13th ed.).

A ZIP code API, also known as a ZIP code lookup, makes it possible to programmatically look up information using a ZIP code as a unique identifier. In North America, all major shipping carriers including USPS, Canada Post, FedEx, DHL, and UPS maintain various APIs with corresponding documentation.

Indian Pincode or Postal code API provides the 29 states and seven territories pincodes data with latitude and longitude details. You can get the nearby area of pincodes, pincodes by districts, distances between two pincodes, nearby area and distance between pincodes by latitude and longitude information.

Yes, when using a ZIP+4 ZIP Code, the number must consist of five digits, a hyphen (or dash), and four digits. Improperly labeled mailpieces may progress slower through the mail system and may be returned to sender if the United States Postal Service® is unable to deliver the item.