Early History
Thornhill was founded in 1794. Its first
settlers on Yonge Street in Thornhill were Asa Johnson (who
settled on the Vaughan side) and Nicholas Miller (who
settled on the Markham side). Of particular importance was
the arrival of Benjamin Thorne in 1820, who was operating a
gristmill, a sawmill, and a tannery in the community. The
settlement came to be known as Thorne's Mills, and later,
Thorne's Hill, from which its current name is derived.
(Thorne committed suicide in 1848, after a serious wheat
market crash.)
Between 1830 and 1848, Thornhill
experienced a period of continued growth and prosperity. The
business district of Thornhill developed on its portion of
Yonge Street, between Centre Street and John Street.
Stagecoaches travelled between Holland Landing (Lake Simcoe)
and York (Toronto) as Yonge Street's road conditions
improved with new stonework. During this prosperous period,
several churches, many of which are still standing today,
were constructed.
Thornhill's location along Yonge Street,
a major transportation route, proved to be beneficial to the
community's growth throughout much of the twentieth century.
The implementation of an electric street railway along Yonge
Street in 1898 towards Kleinburg, Georgina, King and Toronto
meant that, for the first time, it was possible for people
to reside in Thornhill and work in Toronto. By the 1920s,
the prevalence of the automobile further facilitated travel
along Yonge Street.
20th century
In 1931, Thornhill became a "Police
Village"; before that time, Thornhill had no independent
status and was split between the townships of Vaughan and
Markham along Yonge Street, since the creation of municipal
government in 1850. Before 1931, each township administered
its own half of the village. The creation of the Police
Village gave Thornhill its own political boundaries. The
village was headed by a reeve.
In 1971, York Region was created, part of
a wave of municipal re-organization which converted many
townships into towns and eliminated many of the municipal
forms of organization which had existed within those
townships. The establishment of a regional administration
effectively eliminated the Police Village of Thornhill.
Thornhill's administration reverted to the newly formed
towns of Markham and Vaughan at this time.
However, many political and social
institutions remained organized around the former municipal
entities eliminated in 1971. Like neighbouring communities
such as Woodbridge, Maple, and Unionville -- as is typical
for most urbanized former Greater Toronto Area (GTA)
villages outside of the City of Toronto -- Thornhill
remained the postal designation for addresses within the
former village's boundaries, and community organizations
such as local newspapers, sports teams, and schools
continued to operate under the Thornhill name and
designation. As an example, until the mid-1990s residents of
Thornhill seeking to play high-level hockey were required to
play for a Thornhill team.
While the old village of Thornhill
revolved around Yonge Street between Centre and John
Streets, the community is typically thought to be located
between Dufferin Street to the west, Highway 7 to the north,
Steeles Avenue to the south, and Highway 404 to the east.
Suburbanization
Thornhill's growth since the 1960s and
1970s has been largely connected to its location bordering
what is now the City of Toronto. Large housing developments,
particularly beginning in the 1980s with such projects as
the Tannenbaum family's Spring Farm area near Bathurst and
Clark. Beth Avraham Yoseph of Toronto, a large synagogue
named after developer and benefactor Joseph Tannenbaum, is
an example of an innovative twist on the "anchor tenant"
approach adopted by some residential developers.
Growth has continued apace. For instance,
an "uptown" village denoted as Thornhill Town Centre, is
being developed at the corner of Bathurst and Centre Street,
forming a continuous line of development north from the
Promenade Shopping Centre also near Bathurst and Clark,
whose massive parking lot is dotted by an increasing number
of condominium buildings and stand-alone retail plazas.
Expansion
The territory thought to constitute
Thornhill has recently begun to expand northward in
Thornhill-Vaughan, particularly west of Bathurst, due to the
marketing initiatives of residential developers. A new area
called "Thornhill Woods" was developed between Highway 7,
Rutherford, Bathurst, and Dufferin. Another planned
development, "Upper Thornhill Estates", extends well to the
north of Major Mackenzie. In 2008 the City of Vaughan opened
the North Thornhill Community Centre, a new community centre
to serve this population.
However, it should be noted that the area
being labelled as "Upper" or "North" Thornhill is more
traditionally part of Maple, another former village
converted to a community when the Township of Vaughan was
converted to a town. Other developments taking place in
these new areas include Eagle Hills/Mackenzie
Chase/Thornberry Woods at Dufferin and Major Mackenzie.
Coronation and Roxborough is being developed at Upper
Bathurst between Rutherford Road and Major Mackenzie. The
Vaughan planning area that includes Block 18 (East Maple),
Block 11 (Thornhill/Maple), Block 12 (Upper Thornhill/Maple)
and Block 10 (Thornhill Woods) is expected to grow
substantially over the next few years. This area is known as
the "Carrville District".