Use WhitePages.com. Using White Pages is simple. You can search for someone by typing in their first and last name and a possible zip code. Although the first name and zip code are not necessary, it makes sorting through the results nearly effortless.

Use Intelius.com, which uses a first name, last name and state to search for people. Although Intelius offers more information than White Pages once the person is located, the information comes with a price. Finding a person's age, birthday, relatives, address and phone number, cost $1.95 as of 2011. However, for this information plus the person's average income, address history, and home value, you will have to pay $19.95. For aliases, criminal checks, lawsuits, judgements, and bankruptcies, the price is $49.95. Although helpful, this can be too much information to find out about someone.

Use PeopleLookup.com. People Lookup allows you to search for a person by not only first and last name, but also by phone number, public records or address. Like Intelius.com, PeopleLookup.com also charges for information. To find out a person's age, birthday, relatives, address and phone number, the cost was $1.95 as of 2011. For the same information and their average income, address history and home value, you will have to pay $14.95. For background checks and aliases used, the price is $49.99.

Use ZabaSearch.com. Zaba Search is a free and simple people search that claims to have "three times more residential listings than White Pages phone directory." It allows you to search for people by first and last name in all 50 U.S. states at the same time. Although the addresses are free, if you would like to perform a more in-depth search, you would have to pay $49.95 (2011 rate).