St Mary Parish

Name: St Mary Parish
Address: 133 School St, Waltham, MA 02451, Boston, MA, US
Telephone: (781) 891-1730

Boston, Massachusetts

Address133 School St, Waltham, MA 02451

DenominationCatholic

Phone(781) 891-1730

Services

Mass

Sat4:00 PM

Sun9:00 AM, 11:00 AM, 1:00 PM

Daily Mass

Mon12:10 PM, 7:00 PM

Fri12:10 PM, 7:00 PM, 8:00 PM

LanguagesEnglish, Spanish, Luganda

Last updated May 2026

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~6,001

estimated members

Based on ARDA 2020 data, this is likely one of 107 Catholic congregations in Middlesex County, MA, with an average size of approximately 6,001 members. Catholic accounts for 73% of the county's 958 congregations.

Source: ARDA 2020 Religious Congregations & Membership Study

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