Forum Moderators: buckworks
It is possible for parcels to get anywhere, but the postcode / zipcode is important if other information is lacking, hence, state / county, in which the town, just happens to be one of 15 all over the country.
We just moved to a small town in Maine earlier in the year. I have gotten several pieces of mail delivered which has just my name, street name, and zip code. Of course, there are about 2,000 people in the entire town, and the town's two "postmen" are sisters.
When I lived in Albuquerque, I would often have clients call because mail was returned by the post office because it didn't have the correct apartment number on it.
Technically, a ZIP code should take the place of the city and state. That's what they said when they started the danged things, anyway.
If you have the ZIP code but not the city and state, you can go to [usps.com...] and get look it up.
no idea, what i have learnt though is the golden rule...
validate all forms, eg FORCE the user to fill in all fields.
and make sure you have fields for all required bits of the address, name, street name and number, town, state, zip, country and not a generic box where they fill it all in at once.