Knox United Church (formerly Knox Presbyterian Church) began with the organization of the Caron Prairie appointment in 1899. Rev. J.M. Wallace of the Summerside congregation held services in the Caron Prairie School. Summerside, Caron and Caron Prairie formed one pastoral charge with the manse located at Summerside.
In 1902, a Ladies Aid Society was formed and a Sunday School and Christian Endeavor were organized the following year.
In 1905, a meeting was held and it was decided to build a church. In July 1906, a cornerstone was laid on the farm of Dan Ferguson at SW1/4 26-18-29 W2. The building was completed and services began but it was felt that the concrete block building material was unsatisfactory. The upper portion of the church was torn down. A new wooden church was built on the foundation and opened in 1909.
After the service on February 15, 1970, a meeting was held at which there was a unanimous decision to close the church as of June 30, 1970. The last official service was held June 28, 1970. Following the removal of the building, a cairn was constructed on the site.