If you're searching for the address and phone number of "John Smith" you're in trouble, because there are an awful lot of people that share that particular name. But if you know the town where Mr. Smith lives, you can narrow your results considerably. Your first stop is the phone book, of course, but if that doesn't provide the information you need, there are other tools you can use to find information on a person by name and town.
Search for the person at Pipl.com by entering the name, town and state in the proper search fields. Pipl scours the Internet for information on people and presents it in a well-organised fashion. It searches general sources such as Facebook and MySpace, and also consolidates information from many sources on the "invisible web" that are not usually included in a general Internet search.
Search at Intelius.com by entering the first and last names along with the town and state in the respective search fields on the Intelius advanced search page. Intelius is a commercial database with hundreds of millions of listings across the United States. Preliminary search results are free; there is a charge for a full listing.
Ask your local librarian. Libraries often have access to specialised institutional databases such as ReferenceUSA that are not otherwise available to the general public. Your librarian can help you find information on a person when you know the name and town in which they live.