Complete the application on the Certificate of Residency website. 2. Submit the affidavit to your county with two (2) of the following documents as proof of residency.In order to submit your photo online for your Suffolk University ID card, you must first register your Suffolk ID number in the GET Mobile app IOS I Android. Certificates of Residency. Sports Information Director. A couple who intends to be married in New York State must apply in person for a marriage license to any town or city clerk in the state.