Knowsville Zip Code Zip Codes in Knowsville, New York Zip Code Area Code 13601 315 Get Map Schools in Knowsville Case Middle School (7-8) Harold T. Wiley School (4-6) Knickerbocker School (PK-3) North Elementary School (PK-3) Ohio Street School (PK-3) Sherman School (K-3) Watertown Senior High School (9-12, US)

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