In USA, one may often have problems telling the postal code of his own Town. Anyone using regular snail mail surely already knows the pain of having to look up postal codes. If you need to look up ZIP codes often and on the go, then this reference dictionary is just for you. Based on the mobile industry standard Beiks Dictionary Reader, this product is specially optimized for one-hand operation, minimal memory requirements and optimal access speed. It can be installed on either main memory or on an extension media card and once installed does not require or utilize network connection. With this reference dictionary, you can find towns within a known ZIP code area. If you need to find ZIP code by town or area name, you need the reverse reference dictionary.