Pennsylvania is unusual among states in that it still has both no-fault and fault divorce options on the books. The many issues regarding divorce in PA are defined in Pennsylvania Statutes Title 23 Pa.C.S.A. Domestic Relations, Part IV.
The procedures outlined below are suitable for an amicable divorce where there are no ancillary issues such as equitable distribution, custody or support. First, a Complaint in Divorce must be filed with the court. This may be your local county court or another county courthouse within the Commonwealth provided you consent to their jurisdiction. The difference in filing fees is a reason why you may look into filing outside of your county. Second, the Complaint in Divorce needs to be served on the opposing party. This can be done informally by having the other party execute an Acceptance of Service. Other options include service via certified mail, return receipt requested, restricted delivery or personal service by a process server of the Sheriff's office.