"Encourage one another and build each other up."
(1 Thessalonians 5:11)
OUR CONGREGATION is a family of faith marked by compassion and a dedication to serve God and His people.
OUR SUNDAY WORSHIP is conducted in a traditional style with an informal atmosphere in which we turn to the Bible to guide our devotion to God and to find meaning in our daily lives.
OUR CHURCH is located in the Cranberry Township/Mars/Evans City area of southwestern Pennsylvania, just north of Pittsburgh. You can find us at the corner of Union Church and Stoup Roads, just off the Mars-Evans City Road. Look for our signs on the Mars-Evans City Road and on Valencia Road.
OUR TRADITION of worship, fellowship, and service in the name of Jesus Christ began at Old Union's founding in 1806 and continues from James Glover, the first white settler of Butler County, to the children who are active in the programs of today.
Old Union Church is a congregation of the Presbyterian Church USA.
OUR SUNDAY WORSHIP is conducted in a traditional style with an informal atmosphere in which we turn to the Bible to guide our devotion to God and to find meaning in our daily lives.
OUR CHURCH is located in the Cranberry Township/Mars/Evans City area of southwestern Pennsylvania, just north of Pittsburgh. You can find us at the corner of Union Church and Stoup Roads, just off the Mars-Evans City Road. Look for our signs on the Mars-Evans City Road and on Valencia Road.
OUR TRADITION of worship, fellowship, and service in the name of Jesus Christ began at Old Union's founding in 1806 and continues from James Glover, the first white settler of Butler County, to the children who are active in the programs of today.
Old Union Church is a congregation of the Presbyterian Church USA.
July 22-28 Mission Trip to Texas
Trip Blog
Trip Photos
Summer worship services begin at 10:00 AM on Sundays.
A Place for Worship
Christ-centered... Biblically-based... Informal... Friendly... Challenging... Energetic... Thoughtful... Joyful... Worship is the heart of Old Union, when we bring all that we are to our Lord, and seek His word to touch all parts of our lives. Open House September 9
join us for a pig roast and mortgage burning! Discovery Day October 13 Learn from our guest speaker about Servanthood. Watch for more details on both events! 
Old Union Church is affiliated with Beaver-Butler Presbytery and the Synod of the Trinity of the Presbyterian Church (USA).
Old Union Presbyterian Church
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Touching the World
Old Union supports mission projects that change lives and glorify God. Interested in local projects? Disaster recovery? International mission? Visit our missions page to learn about how Old Union works to touch the world with the love of God. 
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Automatic Offering
Old Union Church is equipped to accept contributions as automatic deductions from your bank account. Avoid the hassle of writing checks and remembering to bring them to worship. Remain consistent in your giving when you miss a Sunday or live out of the area. CLICK HERE to download the agreement form. Attach a voided check, and mail them to Old Union Church, 200 Union Church Road, Mars PA 16046, or drop them off in the church lobby.
CLICK HERE for information to help you fill out the form to sign up.
CLICK HERE for information to help you fill out the form to sign up.
Join Our Email Listserv
Subscribe to Old Union's listserv (confidential email list) to keep up to date on life in our congregation!
Old Union Presbyterian Church | 200 Union Church Road, Mars, PA 16046
724-538-8672 | OldUnionChurch@gmail.com
724-538-8672 | OldUnionChurch@gmail.com