This show takes place in a town in California, however, when the family is at the bowling ally, they are playing 5 pin bowling which is exclusive to Canada.
When the Solano family goes to the bowling alley, they are shown playing 5-Pin Bowling. 5-Pin Bowling is only played in Canada, where Gracepoint is filmed, and not in the U.S. where Gracepoint is supposed to be located.
During the search for the Miller boy, the priest repeatedly sings the 19th-century hymn "Holy, Holy, Holy," but never sings the melody correctly and sometimes errs on the lyrics, too. It would be strange for a priest not to know the tune.