Postal Letter

How do I find someones postal code? I know the house and street number?

I would like to send a christmas card to my boyfriends family's house. I know the address, but I do not know their postal code. Is there a way to find out without asking anyone who lives there? They would expect something in the mail, I want to surprise them.

Public Comments

1. Go to USPS.com and use their locator. http://zip4.usps.com/zip4/welcome.jsp
2. Go on Mapquest.com, type in the street address including the city and state. It should give you the map of the address + the zip code.
3. Just type in their house name and street name to google maps and information about the house will come up, showing it on a map and it will include the postcode :) xxx
4. Go to maps.google.com and type in the address, city and state. Hit search and it will show you a map as well as the zip code.
5. On Mapquest you can put in the address, city, and state and it will come up with the zip code too.