Newmarket, Ontario

Secondary schools in Newmarket

Compiled by Mahmoud Halat, updated 14 October 2026

Short answer

There are 5 high schools in Newmarket on this map, from open data. York Region Board of Education is the operator on record for 4 of the 5. Each has its address and a directions link.

Data: Open Database of Educational Facilities (ODEF), version 2.1 (OGL-Canada).

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The map does not load without JavaScript. All 5 secondary schools are in the list below.

High schools in Newmarket

All 5, by name. Check with a place before you go: open data can miss a change.

Dr John M Denison Secondary School
135 Bristol Rd, L3Y 8J7
Operator on record: York Region Board of Education
Directions to Dr John M Denison Secondary School #
Huron Heights Secondary School
40 Huron Heights Dr, L3Y 3J9
Operator on record: York Region Board of Education
Directions to Huron Heights Secondary School #
Newmarket High School
505 Pickering Cres, L3Y 8H1
Operator on record: York Region Board of Education
Directions to Newmarket High School #
Sacred Heart Catholic High School
908 Lemar Rd, L3Y 1R9
Operator on record: York Catholic District School Board
Directions to Sacred Heart Catholic High School #
Sir William Mulock Secondary School
705 Columbus Way, L3X 2M7
Operator on record: York Region Board of Education
Directions to Sir William Mulock Secondary School #

Questions people ask

How many high schools are in Newmarket?

This page lists 5 high schools in Newmarket, Ontario, from open data (ODEF). Open data can miss a new place or keep one that has closed, so check before you go. #

Who operates the high schools in Newmarket?

York Region Board of Education is the operator on record for 4 of the 5. York Catholic District School Board is on record for 1. Operators are matched from the source records and may be approximate. #

Data sources

The secondary schools on this page come from these open data sources, each under its own licence. We did not visit or call each place. Operators are matched from the source records and may be approximate.

Open Database of Educational Facilities (ODEF), version 2.1. Licence: OGL-Canada

Data updated 14 October 2026.

Secondary schools in nearby cities

Cite this page

Canada Service Map, "High schools in Newmarket, ON: 5 locations", updated 14 October 2026, https://canadaservicemap.ca/places/ontario/newmarket/secondary-schools