Plant & Community Overview: Community Overview: Welcome to the City of Mason: On June 1- 1803- Revolutionary War veteran William Mason paid $1-700 at an auction to purchase 640 acres of land in what is now downtown Mason. You'll be able to participate in a variety of benefits and wellbeing programs that may vary by role, country, region, union status, and other employment status factors, for example: Physical - Medical, Prescription Drug, Dental, Vision, Screenings/Assessments.