North Phoenix Process Servers. Valleywide Process Service: Specialized Process Serving in Maricopa County. North Phoenix Process Servers specialize in serving legal documents or documents with legal consequence in Phoenix and across Maricopa County, and we are proud to serve on behalf of our clients to the Phoenix area and throughout Maricopa County. Our team of professional, seasoned Court Officers take their roles seriously. If you need reliable process server service that you can truest, Valleywide Process Service is the right choice for you. We hope we are your first call, and we can definitely be the last call you make. We offer affordable prices and dependable service.