In response to this problem, the USPS introduced the Zip Code system in 1963. The system divides the country into postal zones based on geography, with each five-digit code representing a specific area. The first digit of the Zip Code represents a broad geographic area, while the following two digits represent smaller regions within that area. The last two digits represent specific post offices or delivery stations within the region.
For example, the "90" in the Zip Code 90210 stands for the state of California, the "2" for the Los Angeles region, and the "10" for the particular Beverly Hills post office or delivery station.
In 1983, the Zip+4 system was introduced, which added four digits to the basic five-digit code. This system was designed to further refine the sorting and delivery process, allowing for even more precise targeting of mail. The extra four digits typically represent a specific block or range of addresses within a given Zip Code.
In addition to improving mail delivery, the Zip Code system has also been adopted for other purposes. The system is often used in demographic and marketing research, as it provides insight into the geographic distribution of populations and consumers. For example, a business may use Zip Code data to identify areas with high concentrations of potential customers.
The Zip Code system has also been adopted by other countries around the world, although with different variations and names. In Canada, the equivalent system is called the Postal Code, while in the United Kingdom, it is known as the Postcode.
In conclusion, the Zip Code system has played a significant role in improving mail delivery in the United States since its implementation in the 1960s. The system has also been adopted for other purposes and has been influential in the field of demographic and marketing research.
