Welcome to Thornhill ...

Thornhill is 620 feet [189 m] above sea level.<1>.

Time Zone: Thornhill lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time. The time zone in French: EST- Heure Normale de l'Est (HNE), EDT- Heure Avancée de l'Est (HAE).

Area Codes for Thornhill: 905, 289, 365 & 742<2>

The Canadian Postal Codes for Thornhill: L3T, L4J<3>

Communities Also Named Thornhill ...

Using our Gazetteer, we found that there are 12 communities that are also named Thornhill - they are located in Alabama (4), British Columbia, Kentucky, Manitoba, Nova Scotia, Ohio, Pennsylvania, Virginia and West Virginia.

For more information, see our Tidbits & Trivia Page for Thornhill.

Communities near Thornhill ...

We have created a list of 10 communities that are near Thornhill.

Toronto
(9 miles [14.5 km] to the south)
- Jump to our Gazetteer entry for Toronto
- Jump to TripAdvisor's Tourism page for Toronto <4>
Mississauga
(18 miles [29 km] to the southwest)
- Jump to our Gazetteer entry for Mississauga
- Jump to TripAdvisor's Tourism page for Mississauga <4>
Brampton
(19 miles [30.6 km] to the southwest)
- Note: The GPS coordinates that we are using for Brampton came from an uncertain source and they still need to be verified:<5>
- Jump to our Gazetteer entry for Brampton
- Jump to TripAdvisor's Tourism page for Brampton <4>
Markham
(5 miles [8 km] to the northeast)
- Jump to our Gazetteer entry for Markham
- Jump to TripAdvisor's Tourism page for Markham <4>
Richmond Hill
(4 miles [6.4 km] to the north)
- Note: The GPS coordinates that we are using for Richmond Hill came from an uncertain source and they still need to be verified:<5>
- Jump to our Gazetteer entry for Richmond Hill
- Jump to TripAdvisor's Tourism page for Richmond Hill <4>
Ajax
(19 miles [30.6 km] to the east)
- Jump to our Gazetteer entry for Ajax
- Jump to TripAdvisor's Tourism page for Ajax <4>
Pickering
(16 miles [25.7 km] to the east)
- Jump to our Gazetteer entry for Pickering
- Jump to TripAdvisor's Tourism page for Pickering <4>
Newmarket
(18 miles [29 km] to the north)
- Jump to our Gazetteer entry for Newmarket
- Jump to TripAdvisor's Tourism page for Newmarket <4>
Aurora
(14 miles [22.5 km] to the north)
- Note: The GPS coordinates that we are using for Aurora came from an uncertain source and they still need to be verified:<5>
- Jump to our Gazetteer entry for Aurora
- Jump to TripAdvisor's Tourism page for Aurora <4>
Whitchurch-Stouffville
(14 miles [22.5 km] to the northeast)
- Jump to our Gazetteer entry for Whitchurch-Stouffville
- Jump to TripAdvisor's Tourism page for Whitchurch-Stouffville <4>

TripAdvisor Tourism Pages for Thornhill ...

Looking for more information about Thornhill? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for Thornhill, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Thornhill.

Adding Thornhill to Our Gazetteer ...

As we work on our Gazetteer, we occasionally find mention of a community that is new to us. When we find such a community, we add it to our Gazetteer with the hope of adding more information in the future.

The earliest source we've referenced which mentioned Thornhill was on a map titled Road Map for Ontario (from Shell Oil, 1955).

For more details, see References and Mentions for Thornhill.

Off-the-Road Links ...

Unfortunately, we don't know of a website for Thornhill. If you can help, please contact us through our Feedback Page.

The official website for Province of Ontario: https://www.ontario.ca/

Footnotes ...

<1>	The elevation is an estimate for the area around Thornhill - it will be higher in some places and lower in others.
<2>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 905 code has been Overlayed with one of the following codes: 289, 365 or 742. New phone numbers in the Thornhill area will be assigned with one of these codes: 905, 289, 365 or 742. As a result, placing a call in the Thornhill area will require 10-digit dialing (where you enter both the area code and then the phone number).
<3>	The Canadian Postal Code consists of 6 characters, where the first three characters are the 'Forward Sortation Area (FSA)', with the last three characters being the 'Local Delivery Unit (LDU)'. In the case of Thornhill, we provide only the FSA and not the LDU. The Canadian Postal Codes were created as a way of grouping addresses to make delivery more efficient. So keep in mind that any given Postal Code is only 'loosely' associated with a community (such as Thornhill). The boundaries of the Postal Code can be changed, re-assigned, eliminated or overlapped with other Postal Codes. When looking for a Postal Code, whether Thornhill or elsewhere, it's always best to check the website of the Canada Post / Postes Canada.
<4>	While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<5>	If we found a location and have questions about the accuracy of our information, we will simply say that the marker is 'in the vicinity'. We are not confident about the location and the position of our marker is only a rough guide. If we have too many doubts about the location, we will not include it in our database.