Chartered: 2-18-1956
Sponsor: Antioch
Location: The Monarch Grill at Trilogy, 1000 Summerset, Rio Vista
Meetings: 1st and 3rd Wednesdays, 5:30-7:30 pm
Mailing: P.O. Box 152, Rio Vista, CA 94571
Email: siriovista@soroptimist.net 
Website:  siriovista.org 
Facebook: Soroptimist International of Rio Vista