Vital Records The Cook County Clerk's office is the official record keeper for births, marriages, civil unions and deaths that occur in Chicago and suburban Cook County. Important Vital Records Update Attention Customers Attention Funeral Directors Birth / Death Records Request official records of births & deaths that occur in Chicago & suburban Cook County. Marriage / Civil Union Apply for a Marriage/Civil Union License for ceremonies in Chicago & suburban Cook County. Virtual Marriage License Issuance via Online Video Call Couples can now apply for a Marriage License online. Frequently Asked Questions Frequently asked vital records questions. Business / Notary Register an Assumed Business Name or Receive your Notary Public Commission Certificate approved by the IL Secretary of State. What ID do I need? Acceptable forms of identification required in order to obtain or apply for certain vital records. Correcting a Record Correct a Birth, Marriage or Death record through the Clerk's Bureau of Vital Records, a local registrar or the IL Department of Public Health. Dual Citizenship Which documents are required from a customer when they are applying for Dual Citizenship via Mail or In-Person and need certified certificates.