Since 1882, membership in the Knights of Columbus has been open to men 18 years of age or older who are “practical” (that is, practicing) Catholics in union with the Holy See. Since that time, the Knights of Columbus has understood “practical catholic” to mean a Catholic who accepts the teaching authority of the Catholic Church on matters of faith and morals, aspires to live in accord with the precepts of the Catholic Church, and is in good standing in the Catholic Church.

The previous paragraph is taken directly from the official site of the supreme council of the Knights of Columbus, which oversees all local councils. By filling out our council’s membership application, which you can download from the link given, you’re confirming that you meet these requirements.