About Holy Trinity Church
Holy Trinity Church is a Catholic church located at 320 EAST BOSTON POST, Mamaroneck, NY, 10543. Holy Trinity Church was founded in 1886. You can reach Holy Trinity Church at +19146985944.
Holy Trinity Church is one of 14 churches we list in Mamaroneck, among 12,739 across New York. It falls within Westchester County and the New York-Newark-Jersey City, NY-NJ metro area. It is counted among 2,264 in the Catholic tradition across New York. It is administered within the Roman Catholic Archdiocese of New York.
Where is Holy Trinity Church located?
Holy Trinity Church is located at 320 EAST BOSTON POST, Mamaroneck, NY, 10543. The building sits at coordinates 40.95021, -73.73124, placing it in Mamaroneck, NY 10543.
Location is approximate — drawn from the public street address.
The neighborhood around Holy Trinity Church
The ZIP code 10543 area around Holy Trinity Church is home to 21,281 residents with a median household income of $128,047 and a median age of 40.5 years, according to the US Census Bureau's 2022 American Community Survey 5-year estimates.
US Census Bureau, American Community Survey 2022 five-year estimates.
What to expect at a service at Holy Trinity 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.
Churches in the same diocese as Holy Trinity Church
Holy Trinity Church shares an ecclesiastical jurisdiction with 5 other parishes indexed in Churches List.
- Regina Coeli Hyde Park, NY
- Saint Vito Church Mamaroneck, NY
- Holy Family Catholic Church New Rochelle, NY
- Immanuel Community Church New York, NY
- Most Precious Blood Church New York City, NY
Churches founded the same year as Holy Trinity Church
5 other churches with a documented founding year of 1886 are indexed in Churches List.
- Cathedral of the Nativity Juneau, AK
- Disston Memorial Presbyterian Church Philadelphia, PA
- Trinty Lutheran Church Preschool Canton, OH
- Westminster Presbyterian Church Wilmington, DE
- Immanuel Lutheran Church New York City, NY
Holy Trinity Church by the numbers
Questions and answers about Holy Trinity Church
- What denomination is Holy Trinity Church?
- This church is part of the Catholic tradition.
- Where is Holy Trinity Church located?
- Holy Trinity Church is located at 320 EAST BOSTON POST, Mamaroneck, NY, 10543.
- When was Holy Trinity Church founded?
- Founded in 1886.
Photographs of Holy Trinity Church
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Photographs via Wikimedia Commons. Click through for author and licence.
Visitor notes about Holy Trinity Church
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