---
title: "High schools in Newmarket, ON: 5 locations"
url: "https://canadaservicemap.ca/places/ontario/newmarket/secondary-schools"
description: "5 high schools in Newmarket, Ontario, each with its address, its operator on record and a directions link. From open data (ODEF), updated 14 October 2026."
site: "Canada Service Map"
author: "Mahmoud Halat"
publisher: "Space & Story"
updated: "2026-10-14"
licence: "Built entirely from public data: open data and official government pages. Each record keeps the licence of its source, listed at https://canadaservicemap.ca/data."
---
# Secondary schools in Newmarket

Newmarket, Ontario

Compiled by Mahmoud Halat, updated 14 October 2026. Not a government website. The official page always has the final word.

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.

## High schools (5)

- **Dr John M Denison Secondary School**: 135 Bristol Rd, L3Y 8J7. Operator on record: [York Region Board of Education](https://canadaservicemap.ca/bodies/york-region-board-of-education). [Directions](https://www.google.com/maps/dir/?api=1&destination=44.06902,-79.4771)
- **Huron Heights Secondary School**: 40 Huron Heights Dr, L3Y 3J9. Operator on record: [York Region Board of Education](https://canadaservicemap.ca/bodies/york-region-board-of-education). [Directions](https://www.google.com/maps/dir/?api=1&destination=44.06421,-79.4459)
- **Newmarket High School**: 505 Pickering Cres, L3Y 8H1. Operator on record: [York Region Board of Education](https://canadaservicemap.ca/bodies/york-region-board-of-education). [Directions](https://www.google.com/maps/dir/?api=1&destination=44.04734,-79.434)
- **Sacred Heart Catholic High School**: 908 Lemar Rd, L3Y 1R9. Operator on record: [York Catholic District School Board](https://canadaservicemap.ca/bodies/york-catholic-district-school-board). [Directions](https://www.google.com/maps/dir/?api=1&destination=44.05783,-79.4409)
- **Sir William Mulock Secondary School**: 705 Columbus Way, L3X 2M7. Operator on record: [York Region Board of Education](https://canadaservicemap.ca/bodies/york-region-board-of-education). [Directions](https://www.google.com/maps/dir/?api=1&destination=44.0322,-79.4798)

## 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

- [Open Database of Educational Facilities (ODEF), version 2.1](https://www.statcan.gc.ca/en/lode/databases/odef), licence: OGL-Canada

Operators are matched from the source records and may be approximate.

## More

- [Public services in Newmarket](https://canadaservicemap.ca/places/ontario/newmarket)
- [Parks](https://canadaservicemap.ca/places/ontario/newmarket/parks) (65)
- [Pharmacies](https://canadaservicemap.ca/places/ontario/newmarket/pharmacies) (48)
- [Elementary schools](https://canadaservicemap.ca/places/ontario/newmarket/elementary-schools) (23)
- [Labs and diagnostic imaging](https://canadaservicemap.ca/places/ontario/newmarket/labs-and-imaging) (11)
- [Mental health and addiction services](https://canadaservicemap.ca/places/ontario/newmarket/mental-health-services) (8)
- [Private schools](https://canadaservicemap.ca/places/ontario/newmarket/private-schools) (8)
- [Long-term care homes](https://canadaservicemap.ca/places/ontario/newmarket/long-term-care-homes) (4)
- [Public health offices](https://canadaservicemap.ca/places/ontario/newmarket/public-health-offices) (3)
- [Aurora](https://canadaservicemap.ca/places/ontario/aurora/secondary-schools) (5)
- [Bradford West Gwillimbury](https://canadaservicemap.ca/places/ontario/bradford-west-gwillimbury/secondary-schools) (3)
- [Richmond Hill](https://canadaservicemap.ca/places/ontario/richmond-hill/secondary-schools) (10)

## 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