Welcome to the Suffolk County Clerk's Office. At one time or another either directly or indirectly, every resident of Suffolk County deals with our office.Application for a summons DC-430 File with a verified complaint to request the court to issue a summons if you do not have an attorney. The enrollment deposit deadline is January 1 for Spring enrollment, May 1 for fall enrollment, or the date on your acceptance letter. Intheblanks form required for any matter originating and electronically filed in Supreme or Surrogate's Courts in Richmond County. Apply for Financial Aid, If You Haven't Already. If you're applying for aid, fill out the FAFSA form as soon as possible. Two (2) forms of proof of address must accompany your application. Individuals who are no longer residing within Suffolk County must provide proof of a previous Suffolk County Address;. Update. To update your personal name, business or residence address download, complete and submit the Change Notice to the address on the form.