More details about this data
About ZIP codes in the United States
This map depicts the boundaries of all 5-digit postal codes or districts within the country of the United States. All of these United States postal codes are used within the United States to help the postal service of the United States (US Postal) route mail more efficiently throughout the United States and large cities like New York.
US postal codes data is derived from US Census data and turned into easy to understand maps. postal Code Tabulation Areas (ZCTAs) are generalized areal representations of United States Postal Service (USPS) postal Code service areas. The USPS postal Codes identify the individual post office or metropolitan area delivery station associated with mailing addresses. USPS postal Codes are not areal features but a collection of mail delivery routes. Postal codes in the United States are known as ZIP-codes.
Postal code structure in the United States
This map depicts the 5-digit postal code areas. They contain of the following characters and features:
- 1xxxx : The first digit represents a particular part in the USA. Number 1 features the states Delaware (DE), New York (NY) and Pennsylvania (PA)
- 115xx: The second and third digit feature a specific Sectional Center Facility (SCF). The number 115 features Western Nassau
- 11560: The fourth and fifth digit represent a specific area, city or village
Current postal code range in the United States
The current postal code (postal codes) range of the United States (US) is: 00001 – 99950. The lowest postal code area is 00001. This is the N Dillingham area in Alaska. The highest postal code area is 99950, which is also in Alaska. This area features Ketchikan.