In the late 1800's the Catholic bishop of Colorado, Joseph Machebeuf, gave the responsibility for the churches in Boulder County to the Benedictine priests of St. Vincent Archabbey in Latrobe, Pennsylvania. For several years, Catholics in Lafayette attended St. Louis Church in Louisville. But in 1904 an effort was begun to establish a parish in Lafayette, and for the next two years, funds were collected for this purpose. In 1907, the parish of St. Ida was canonically established, a small church was built, and on August 4, 1907, Fr. Virgil Nesslein, O.S.B. was appointed the first pastor. Despite economic disasters, miners' strikes, a major flu epidemic and the Ku Klux Klan, the parish continued to grow.

By the early 1950's, it was obvious that the small church was no longer adequate and so a new church was built two blocks to the north. In July 1954, the new church was dedicated, and because it was the Marian year honoring the 100th anniversary of the declaration of the Immaculate Conception, (and also because hardly anyone knew who St. Ida was) the name of the parish was canonically changed to Immaculate Conception. In June of 1968, the Benedictines asked the Archdiocese of Denver to take over the parish for the assignment of priests, and since then the priests serving in Lafayette have been diocesan priests.

Now we are in the 21st century, and it is time to build a new church and pastoral center so that we can carry on the work handed down to us by our faith-filled ancestors.