St. John the Baptist was established in 1866. In that year the first Mass was celebrated in Baden in a private home. In 1868, land was purchased in Economy Township and work began on a small frame church. The church was completed the next year. For the rest of the century the parish was mainly a mission of St. James, Sewickley, although at times it apparently was served from St. Cecilia in Rochester or Ss. Peter and Paul in Beaver. In 1909, a pastor was assigned to the parish. The pastor was also given the position of Chaplain to the Sisters of St. Joseph in Baden. The pastor established his residence at the Sisters' Motherhouse.
Due to the inconvenient location of the church, many members began attending other local churches. To save the dwindling congregation, the church was abandoned and Mass was shifted to the chapel in the Sisters of St. Joseph Motherhouse. This arrangement, meant to last for 10 years, actually continued until 1950. On February 27, 1948, the bishop proposed the building of a new St. John the Baptist Church. Property was purchased in Baden for the church and on December 5, 1948, ground was broken for the new church. The cornerstone was laid on May 22, 1949, and the completed building was dedicated on February 12, 1950.
The church was renovated between the years 1973 to 1975. Additional changes were made in 1983 and 1990.
With the turn of the century, trends in the Diocese of Pittsburgh began to reveal a decline in Mass attendance and sacramental participation. At the same time, the number of priests available for parish ministry also began to decline.
To address these challenges, Bishop David Zubik announced on April 12, 2015 a new diocesan initiative, On Mission for The Church Alive!, a consultative strategic planning process designed to foster viable, sustainable and vibrant parishes. As part of this process, the Bishop, in consultation with the faithful, began to consider new models of parish life based on pastoral needs, financial and temporal resources and available clergy.
In 2018, following the period of consultation, parishes were grouped together and served by a single clergy team to eventually form one new parish.
During this transition period, St. John the Baptist Parish remained an independent parish while sharing clergy and staff and eventually publishing a joint bulletin with the other parishes. This ended on July 1, 2022 when St. John the Baptist Parish merged with Good Samaritan Parish, Ambridge; Our Lady of Peace Parish, Conway and Ss. John and Paul Parish, Franklin Park to form the new St. Luke the Evangelist Parish. As part of the merger St. John the Baptist Church was closed at the time of the merger and the parish planned to sell the building to the Maronites.