Photo: Wesoree · CC BY-SA 4.0Thornlea’s surroundings: 53 historic places within 25 km
Its housing is mostly newer: 1.9% predates 1961, where the typical town has 18%. For the highest designations, the closest town is Richmond Hill, 7.5 km off.
53 historic places within 25 km of Thornlea
Its 35 places of national rank start with Montgomery's Tavern, at 13 km. They are 35 National Historic Sites, 12 provincial or municipal listings and 4 heritage railway stations. Closest of all is “Canadian National Railway Station, Unionville, Ontario”, in Unionville, 7.8 km off.
The 12 nearest, within 25 km
| Canadian National Railway Station, Unionville, OntarioHeritage Railway Station · 1871–1872 · 7.8 km away, in Unionville |
| Former Canadian National Railway Station, Maple, OntarioHeritage Railway Station · 1903–1904 · 10 km away, in Hope |
| Markham Village Town HallDesignated heritage property (part IV) · 1881 · 12 km away, in Markham Village |
| Former Canadian National Railway Station, Markham, OntarioHeritage Railway Station · 1871–1872 · 12 km away, in Markham Village |
| Montgomery's TavernNational Historic Site · 1837 · 13 km away, in Yonge-Eglinton |
| Eglinton TheatreNational Historic Site · 1935–1937 · 14 km away, in Lawrence Park South |
| Mount Pleasant CemeteryNational Historic Site · 1873 · 14 km away, in Mount Pleasant East |
| Balmoral Fire HallNational Historic Site · 1911–1912 · 16 km away, in Yonge-St.Clair |
| Don Valley Brick WorksOntario Heritage Trust easement · 16 km away, in Leaside-Bennington |
| SpadinaNational Historic Site · 1866–1914 · 16 km away, in Casa Loma |
| Studio BuildingNational Historic Site · 1913–1915 · 17 km away, in Rosedale-Moore Park |
| Heliconian HallNational Historic Site · 1876–1877 · 17 km away, in Annex |
The places within 25 km of Thornlea lean to the decades after Confederation
Reaching 25 km out from Thornlea: the historic places by their first construction date on record.
51 places within 25 km carry a construction date. 16 go back before 1867. First by date comes Ashbridge Estate in Greenwood-Coxwell, from 1793.
Thornlea’s building boom came from 2001 to 2015: 32% of its homes
30% of Thornlea’s homes date from 1981 to 2000, well above the typical 23%. From 2016 to 2021 Thornlea added 3.4% of its homes, close to the typical town’s 4.1%. More than half of Thornlea’s housing predates 2001.
2021 Census, private dwellings by period of construction (Statistics Canada); the typical town is the middle Canadian town of 2,500 or more.
Thornlea and its neighbours
| Town | People | Places | Highest | Oldest |
|---|---|---|---|---|
| Thornlea | 20,872 | 0 | 0 | — |
| German Mills | 11,923 | 0 | 0 | — |
| Langstaff | 8,147 | 0 | 0 | — |
| Steeles Corners | 9,468 | 0 | 0 | — |
| Bayview Woods-Steeles | 12,499 | 0 | 0 | — |
| Hillcrest Village | 16,374 | 0 | 0 | — |
| Newtonbrook East | 15,996 | 0 | 0 | — |
Thornlea in brief
Most of its homes are post-1960: only 1.9% came earlier, against 18% in the typical town. For the rest, as with most towns its size, no historic place is listed.
What this data can and can’t tell you
- The tiers. Tiers follow the designation: national recognition and classement first, other federal designations next, provincial and local listings last.
- The grade. There is no history grade: the page sets out the record and compares it with other towns.
- Provincial and municipal lists. Outside Québec, provinces’ and municipalities’ heritage registers aren’t open data; their places are known only through Wikidata items with a register number, and only those with an encyclopedia article get a page.
- The federal register. Every federal designation is in Parks Canada’s directory, and the Canadian Register of Historic Places gives most of them a bilingual statement of significance.
- Protection. Being on these registers doesn’t mean a building can’t change. Federal designation commemorates; protection is provincial or municipal, and those lists aren’t open here.
- People and events. Parks Canada’s open file gives its national historic persons no place. A town’s page names one only when the person was born there (matched by name and both life years) or one of its own historic places carries the name and its record speaks of them; national historic events stay off.
Questions about Thornlea’s history
How many historic places does Thornlea have on the registers?
Thornlea has none of its own yet. Canadian National Railway Station, Unionville, Ontario, in Unionville, is the nearest, 7.8 km away.
How old are the homes in Thornlea?
1.9% predate 1961, where the typical town has 18%.
Contains information licensed under the Open Government Licence – Canada (Parks Canada).
Sources: Parks Canada, Directory of Federal Heritage Designations · Canadian Register of Historic Places (federal extract) · Wikidata (CC0) for map points, other names and articles · Statistics Canada, 2021 Census (homes by period of construction). Under the Statistics Canada Open Licence.
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).