The parish boundaries for John XXIII Catholic Church are:
On the north - E Ave NW
On the east - West Post Road
On the west - Linn-Benton County line, including the town of Walford.
On the south - Beverly Road to Williams Boulevard, proceeding southwest on Williams Boulevard to 80th Street, north on 80th Street to the southern border of section 4 of Fairfax Township, proceeding westward along the southern border of sections 4 and 5 of Fairfax Township and the northern border of section 7 north of West Cemetery Road, and then proceeding west along West Cemetery Road to the county line.
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