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Welcome to our parish website.

We are a Roman Catholic parish of the Archdiocese of Seattle located in Tukwila, WA.

Our parish is very diverse with people from many different cultures, languages, and ways of life.

We were founded as a mission (St. Joseph) in 1912. A small church was constructed in 1913 and we were later established as a parish in 1946. The parish was relocated because of the construction of I-5. Our current church was dedicated in 1963. A renovation of the church took place in 2001.

In 1994 Our Lady of Lourdes (Seattle) and St. Thomas were combined as two parishes. On July 1, 2019 the parishes were separated.

The website is constantly being updated, so please check back again for updates. If you are in the area, please come and pay us a visit. We would love to have you join us for a Mass. We are just three miles from the Seattle-Tacoma International Airport.

Thanks again for stopping by and may God bless your day in abundance!

in Christ,
Fr. James Northrop

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Mass Schedule

Saturday Vigil Mass (English) 5:00PM
Sunday: 8:30AM (Spanish) 10:30AM (English)
Tuesday: 7:00PM (Spanish)
Wednesday-Friday 9:00AM (English)

1st Friday of the month Adoration 8:00AM/Rosary 8:30AM/Litany of the Sacred Heart 8:50AM/Anointing of the Sick Mass 9:00AM

Confessions: Saturday 4:00PM-4:50PM Sunday 7:30AM-8:20AM Tuesday 6:00PM-6:45PM Friday 10:00AM-10:30AM

Adoration: Friday 9:30AM-11:00AM Tuesday 5:00PM

Parish News (upated August 7, 2019, 2019)

  • Rectory/Parish Offices Roof Replacement

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    Our roofing crew is making great progress on the replacement of the rectory/parish offices roof. We are saving a ton of money because of the generosity of our volunteers who are doing all of the labor. Please pray for their safety and well-being.

    Many thanks to the kitchen crew who is keeping everyone well fed. They are doing an excellent job!

    Remember all of the monies that we get back if we go over our goal for the Annual Catholic Appeal will go to offset the costs of the roofing project.
  • Assumption Mass Schedule

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    The Solemnity of the Assumption of Mary is celebrated on August 15, 2019. It is a Holy Day of Obligation.

    Mass will be celebrated at St. Thomas at 9:00AM in English and there will be a bilingual Mass at 7:00PM.
  • Faith Formation Registration

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    Registration for Children and Young Adult Faith Formation classes will be held during the weekend of August 18 and August 25.
  • FORMEDĀ® is now available for St. Thomas Parish!

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    We're pleased to announce the availability of FORMED, an online service for accessing thousands of Catholic videos, audios and ebooks On Demand anytime, anywhere! As a member, you will have access to entertaining movies, inspiring audio talks, informative bible studies, and much more. We are providing this resource free of charge to help our members learn and grow in their faith. You will also be able to easily access any featured content the we are promoting within our community from time to time. So please join us.

    Also once you have signed up, don’t forget to download the free iOS or Android app to put FORMED at your fingertips.

    We hope you will enjoy this incredible gift and please spread the word to others.

    To sign up for FREE, just visit us here: Our parish code is 8CFMRR.

    in Christ,
    Fr. Jim
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Mass On The Grass
Mark your calendar for September 29, 2019. We will be having an all parish Mass at 10:30 out on the lawn. Picnic to follow. No 8:30AM Mass that day.