Where can i find someone's address using only their phone number?

Try going to Yahoo People Search and there should be a spot where you can search by phone number.

Go to MSN.COM..go to the white pages and do a reverse phone look up..if the number is registered

A lot of the time if you just enter the number into a google search it will find it. You can try a few different ways... 10 digit number no spaces or () (area code)number-number 1(area code)number-number I find most mine this way. So much fro the Do Not Call Registry :(

try the yellow pages website or do a search for reverse phone book. There are websites that do that, i just can´t remember the one i used once.

Use the operator, call them collect and ask them where they are. If it's a business that's been trying to contact you they should accept the charges. If it's a telemarketer, and you want them to stop next time they call you can: ask them to take your name off the list; ask them to hold on a moment and set the phone down (I had one last for 4 minutes once); pretend you are a homicide detective and they just called a murder scene the grill them for their name, address, relation to the 'deceased'. Or use this website: http://www.whitepages.com/9901/reverse_phone