Verifying a persons age is not as simple as checking their name, address, or telephone number. The best source to verify a persons age is their birth certificate. Most states maintain vital records on birth, death, marriage and divorce through the Department of Vital Records. They may offer a website that provides this data but it is probably best to call the office and ask for the information you need. Access to birth records is restricted in some states and the methods they allow access from may vary from state to state. A small fee, $2 for example, may be required to get this information but it is used to cover the time involved, paper, etc... For a complete listing of every states vital records please visit: http://vitalrec.com
Marriage licenses may also be used to find out the age of a person. They are available via most states Department of Vital Records just like a birth certificate. Some cities/states may not consider marriage records public information so access may be limited.
The Department of Motor Vehicles is another excellent resource for finding a persons age. Most states require drivers licenses to be renewed every four years so this information is usually up-to-date. Many states offer online DMV information but it is best to call first and ask for the quickest and easiest way to get the information.
Voter registration records are easy to access and can be found either online or just a phone call away. Most people are not aware that voter registrations are public information and therefore, often provide more accurate information about themselves than they might at other times. Call the records clerk for the area the person is in and tell them you want to check voters registration records. They can tell you the quickest and easiest way to access them.
If you don't mind spending a little money you can hire a professional to check this information for you or you can buy one of the many software programs, such as Net Detective, to help out.