Zip Code

When travel to San Francisco, you might miss a point of city information thay really can do you big favors when needed. That is the zip code. San Francisco Zip code is usually numbered in such a pattern that the first digit represents a certain group of U.S. States. The second and third digits simply represent a region that belongs to that group or even a large city. The forth and fifth digits represent a group of delivery address for the mail in that region. The main town often gets the first ZIP codes for that region, after that the numerical order often follows the alphabetical order.

As Zip codes are meant for efficient postal delivery, San Francisco zip codes often crosses state boundaries such as military spanning state or remote areas. The first three codes often function as SCF for mail sorting and distribution for a particular area. Usually a SCF may be having more than one first three digits allotted to them. Sometimes they may also serve area in adjacent state, due to some lack of appropriate location for that particular region. The number of Zip code usually increase southward along East Coast.

San Francisco zip codes start from 94101 to 94112, 94114 to 94147, 94150 to 94170, 94172, 94175, 94177. The area code for San Francisco is 415. The next two digits represent the area of the city or village or even town. On crossing the state lines, they are assigned a separate three digit prefix for the serving state. It is always possible to identify any state with its Zip code, just by looking at the first three digits.

San Francisco Zip codes themselves do not represent any geographical regions. They simply correspond to address of mail delivery. The areas may overlap or be artificial constructed area with no geographical defined area. In areas without regular postal delivery or routes ZIP codes are usually not assigned. A locality may also be assigned a Zip code that may not match with rest of the state. In other words, Zip codes may cross any state boundaries.