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. I want to - Choose - Get a Birth Certificate Get a Marriage License Get a Marriage Certificate Get a Death Certificate Register a Business Name 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.