St. Mary’s Catholic Schools High School Business Name: St. Mary’s Catholic Schools High School Address: 300 N. 4th Street O’Neill, NE 68763 Phone Number: 402-336-4455 Website: stmarysoneill.org Facebook Page: @stmarysoneill Email: jcrumly@smcards.org Category: School Tags: Catholic School, high school, Holt County, O’Neill, school Google Map: