Visit the "Mass Times and Office Hours" tab for office hours, outdoor Mass schedules, and live-stream schedules.

View written copies of Fr. Imo's weekly reflections.

How can the priests, staff, and community of St. John XXIII pray for you? Submit a prayer request!

Complete our online form to register your family in our parish.

St. John XXIII Catholic Community Fontana, CA.

  • Facebook
  • YouTube
  • Instagram

© 2020 by St. John XXIII Catholic Community. Created with

Parish office hours are Monday - Friday, 9 a.m. - 4 p.m.

Fontana: (909) 822-4732

Rialto: (909) 421-7030


For emergency sick calls (only after office hours), please call (909) 441 9443.