The exact date Christianity first reached the Nårunga area is unknown, though it may have been as early as the eleventh century. Local tradition suggests early worshippers chose sites near older cult places or ancestral burial grounds, and excavations at nearby Ljur indicate its first church stood on a prehistoric burial field. Surviving thirteenth-century font stones point to the earliest churches in the district dating from around that period, though this remains uncertain.
The present building was erected in 1851 on the high outcrop where Nårunga's medieval church had previously stood, designed by the local builder Fredrik Sundler in an Empire style. Its construction followed discussions, begun as early as 1807, to unite the congregations of Nårunga, Ljur and Skogsbygden into a single parish. The church is built of stone, with a nave, a rounded chancel to the east, a west tower with a shallow spire and lantern, and a sacristy attached to the south of the chancel. A thorough renovation was completed in 1951, and the light interior features a painted wooden vault above the chancel, decorated in 1897 in a Renaissance style with small angels.
The font, carved from sandstone in two parts during the thirteenth century, is among the church's oldest furnishings, decorated with arcading, crosses and lilies. A copper christening basin was made in Nuremberg in the sixteenth century. The colourful altar triptych and gallery paintings are the work of Joël Mila, added in 1954.
Three bells hang in the tower. The largest is a late medieval bell without inscription, previously housed in a bell frame demolished along with the old church. A middle bell was cast in 1972, and the smallest bell came from Ljur's old church, cast in Skara in 1687. An earlier thirteenth-century bell, once in Nårunga church until 1972, now hangs separately at Skogsbygden's parish hall.
The organ, on the west gallery, retains a silent façade from 1935, when an instrument built in Herrljunga was installed. Parts of this pipework were incorporated into the present organ, built in 1975 with fifteen stops across two manuals and pedal.