How to obtain birth certificate.?

If you know the state you were born in, you can check with that state's records library. It is helpful to know specifically the county you were born in. All or most states and counties in the United States have a website that should include information on how to obtain a birth certificate. You should be able to mail a request to the county's records office, or you may be able to obtain a record in-person (the address will likely be listed on the same website). You may also be able to order a certificate online, via telephone, or by fax. You will have to pay a fee for obtaining the birth certificate - usually about $20.