About St Mary Church
St Mary Church is a Catholic church in Walnut Creek, California located at 2051 Mt Diablo Blvd, Walnut Creek, CA 94596, United States. As of April 2026, St Mary Church holds a 4.7-star rating across 88 Google reviews. You can reach St Mary Church at +1 925-891-8900.
Patron saint of St Mary Church
Mary (the Virgin Mary)
Feast day: Aug 15 (Assumption)
Other churches named after Saint Mary
5 other churches named in honor of Saint Mary are indexed in Churches List. The most-reviewed of those appear below.
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Catholic · Phoenix, AZ
St. Mary
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Catholic · Natchez, MS
St. Mary Basilica
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Catholic · Chicago, IL
Saint Mary of the Angels Church
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Catholic · Chicago, IL
St. Mary of the Lake
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Catholic · Los Angeles, CA
St. Mary
When does St Mary Church hold services?
St Mary Church publishes the following weekly hours: Thursday 6:30 am–4 pm, Friday 6:30 am–4 pm, Saturday 8:30–9 am, 3–5 pm, Sunday 7 am–2:30 pm, Monday 6:30 am–4 pm, Tuesday 6:30 am–4 pm, Wednesday 6:30 am–4 pm. All times are local to Walnut Creek, CA.
- Thursday
- 6:30 am–4 pm
- Friday
- 6:30 am–4 pm
- Saturday
- 8:30–9 am, 3–5 pm
- Sunday
- 7 am–2:30 pm
- Monday
- 6:30 am–4 pm
- Tuesday
- 6:30 am–4 pm
- Wednesday
- 6:30 am–4 pm
Where is St Mary Church located?
St Mary Church is located at 2051 Mt Diablo Blvd, Walnut Creek, CA 94596, United States. The building sits at coordinates 37.89544, -122.06741, placing it in Walnut Creek, CA 94596.
Location is approximate — drawn from the public street address.
- Public parking 98 ft
- Public parking 223 ft
- Public parking 295 ft
- Public parking 463 ft
- Public parking 489 ft
- Alborz 850 ft
Nearby places drawn from OpenStreetMap, May 18, 2026.
What to expect at a service at St Mary Church
Roman Catholic parishes follow a structured liturgy called the Mass, celebrated worldwide in the same order.
- Mass lasts about an hour and includes Scripture readings, a homily, hymns, and Holy Communion.
- Visitors are welcome. Only baptized Catholics in good standing receive Communion; others come forward with arms crossed for a blessing.
- Dress is modest but not formal — business casual is typical for Sunday Mass.
Generalized notes for first-time visitors. Individual churches vary — when in doubt, ask a greeter at the door.
Your Sunday at St Mary Church
St Mary Church by the numbers
Questions and answers about St Mary Church
- What denomination is St Mary Church?
- This church is part of the Catholic tradition.
- What are the service times at St Mary Church?
- Published hours: Thursday 6:30 am–4 pm, Friday 6:30 am–4 pm, Saturday 8:30–9 am, 3–5 pm, Sunday 7 am–2:30 pm, Monday 6:30 am–4 pm, Tuesday 6:30 am–4 pm, Wednesday 6:30 am–4 pm
- What is the phone number for St Mary Church?
- You can reach St Mary Church at +1 925-891-8900.
- Where is St Mary Church located?
- St Mary Church is located at 2051 Mt Diablo Blvd, Walnut Creek, CA 94596, United States.
- Who is the patron saint of St Mary Church?
- Saint Mary (Mary (the Virgin Mary)). Feast day: Aug 15 (Assumption).
- How do visitors rate St Mary Church?
- 4.7 out of 5 stars, based on 88 Google reviews.
- Is St Mary Church the official listing?
- This listing is compiled from public Google Business data and has not yet been claimed by the church. If you represent St Mary Church, you can claim the listing to edit hours, photos, and announcements.
Visitor notes about St Mary Church
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No notes yet for this church. Visitor notes are coming soon — for now, write to editors@churcheslist.com and we'll post your reflection by hand.