The name "Kirchdorf" already indicates that this settlement is ancient cultural ground and can point to a long-standing church history. The first church, built in the 8th century, was constructed over a secular building from the Roman imperial period (around 400 a.m.). Around 800, the early medieval church was built, followed by the Romanesque church in 1200 and the late Gothic church in 1510. In the middle of the 18th century, it was baroque in style. In 1816, the interior of the church was redesigned in the neoclassical style.
The ceiling frescoes by Josef Schöpf from 1816 depict in the chancel the stoning of the patron saint, St. Stephen; in the nave, the presentation of the scapular to St. Simon Stock by Mary; and above the organ loft, the second patron of the church, St. Lawrence, between Emperor Heinrich II and Kunigunde as an intercessor over the village.
The high altar, with its double-column design and gable top made of marble and gilded carvings, capitals, and the tabernacle, was created by Johann Schweinester in 1836.
The gilded figures of Rupert and Virgil and the angels at the altar, as well as the figures of Peter and Mary Magdalene on the two confessionals, come from St. Johann's Josef Haid.
The altar paintings were created by Johann Endfelder – depicting the two church patrons Stephen and Lawrence and the Holy Trinity at the high altar.
The octagonal baptismal font in the presbytery is a reminder of the fire in 1809, as noted in its inscription.
The gravestone of Provost Erasmus Sibenpekh (pastor in Kirchdorf from 1536-1553) in the basement of the tower is among the most important grave monuments of the Renaissance in Tyrol.