|Time zone||EST (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|Area code(s)||905 and 289|
Cornell (2006 population estimated 12,000) (Census Tract Numbers (2011): 5350400.19, 5350400.20, 5350400.21, 5350403.03 (Previously 5350400.01))  is a new community being developed in northeast Markham, Ontario and bounded by Highway 407, 16th Avenue, Ninth Line, and the Don Cousens Parkway. The 2011 population of this area was 9,880. Adding Cornell North's 2,178 (from 16th Avenue to Don Cousens Parkway) it had 12,058 residents. 
Cornell was conceived in the 1990s planning process by the town of Markham. Unlike other Markham communities, Cornell is a planned community.
One of the original settlers was Christian Reesor. He and his family settled in Cornell. Their original homestead was on Reesor Road. The name ‘Cornell’ derives from the maiden name of the wife of Christian Reesor’s youngest son, who continued to live at the family homestead.
Cornell's name was selected in the 1990s from a suggestion by local lawyer Paul Mingay. Mingay's family roots can be traced back to Susan Emily Cornell, a descendant of William Cornell, settler of Scarborough, Ontario. Later Cornells settled in Markham, Ontario and married into the Reesor family. William Cornell immigrated to Canada from Rhode Island is a distant relative of Ezra Cornell, founder of Cornell University.
Most of the houses are townhomes, semi-detached, or detached houses with garages at the rear. The communities are built with central amenities in order to contain suburban sprawl. Cornell was seen by the Markham Town Council as a way to deter the ongoing sprawl by encouraging residential density. The community, particularly Cornell Village, is designed as a walkable neighborhood with a variety of housing types and retail. Cornell Village, between Highway 7 and 16th Avenue, is fully populated with medium density residential. The southern section of Cornell (south of Highway 7), however, is not populated, and remains as a wild field and a farm. In 2012, the City of Markham completed Fire Station 99 to serve the area.
Subdivisions within Cornell
Cornell can be further separated by development phases:
- Grand Cornell - locate near Highway 7 and 9th Line and built by builders H&R, GreenPark and CountryWide
- Upper Cornell - located near 16th Avenue and 9th Line and built by builders Aspen Ridge or Beaverbrook
- Cornell Village - located between 16th Avenue and Highway 7 along 9th Line to Cornell Center Blvd; built by builders Mattamy or Ballantry
- Cornell Rouge - Located east side of Cornell Center Blvd to Donald Cousens Way between 16th Avenue and Highway 7; built by builders of Madison Homes and Forest Hill
The remaining portions of Cornell are still non-agricultural grasslands, but it will slowly disappear with further development.
In 2004 there was a plan to create a residential and retail development called Cornell Town Centre along the southern end of Cornell. This plan never materialized and most of the area has since been re-developed as residential homes. The man-made recreational Cornell Lake is now a series of ponds that carries the waters of Little Rouge Creek in Grand Cornell development.
This area is mainly served by Toronto Pearson International Airport for civilian air travel.
The development is not far from the proposed Pickering Airport and once one of the sites for landfills in the Greater Toronto Area. While runway 10R/28L will still be within Pickering, the southwest end of the property will be located north of 16th Avenue and 9th Line.
- 1 Highway 7
- 25 Major Mackenzie
- 9 Ninth Line
- 16 16th Avenue
- 303 Bur Oak Express
- 522 Markham Community
The Markham Stouffville Hospital Terminal is a temporary terminal serving Cornell and the nearby areas. The York Region Transit authority is currently building a permanent bus terminal, Cornell Terminal, located at Donald Cousens Parkway and Highway 7. The temporary terminal at Markham Stouffville Hospital will shut down upon completion of the new terminal. The completion date is not yet to be known.
Major roads and highways in the community include:
- 16th Avenue runs east-west on the northside of Cornell.
- 9th Line runs north-south on the west side of Cornell.
- Don Cousens Parkway runs north-south on the east side of Cornell.
- Cornell Centre Blvd is a secondary road in the east side of Cornell that runs north-south from Highway 7 to 16th Avenue. Formerly known as Markham Bypass.
- Bur Oak Avenue is a secondary road in the north side of Cornell mainly north-south and curves around north of 16th Avenue to Ninth Line.
- Highway 7 is an east-west road that cuts through the centre of Cornell from Donald Cousens and Ninth Line.
- Ontario Highway 407 is an east-west highway on the southern boundary of Cornell with two exits (Donald Cousens and Ninth Line)
The above roads are heavily travelled by commuters during the weekdays to get around Markham, York Region and Toronto.
Parks and recreation
- Cornell Village Park is community park located next to Cornell Village Park PS
- Donald Cousens Parkway North Berm and Flatlands - naturalized area on the northeast corner of Ninth Line and Donald Cousens Parkway in Upper Cornell.
- Grand Cornell Park - features clock tower and bell commemorating the Reesor settlers in the area; par is unfinished due to stoppage of development east of the Little Rouge Creek
- Oakmoor Pond - man made marshes that drains Little Rouge River
- New Union Park - pending renaming after local veteran
- Burkholder Parkette
- Shania Johnstone Parkette
- Cornell Community Centre with library and swimming pool
A number of smaller parks dot the area and do not have any names.
City owned parks are maintained by parks staff year round.
- Lindvest Condo and Retail Development - 1,300 condo units, 50 live/work and commercial/retail/office space located on the South side of Hwy 7
- YRT/Viva bus terminal - location to be determined
- Cornell Village P.S: accepts students mostly from Cornell.
- Little Rouge P.S: located in Cornell North. Students living in Grand Cornell, Cornell Rouge, Cornell and Upper Cornell and students from the farmlands northeast of Markham attend Little Rouge Public School.
- Black Walnut P.S: The significance of the school’s name is from the fact that Black Walnut trees grow best in deep, fertile soil. When settlers came to Markham, more than two centuries ago, they saw Black Walnut trees growing. They knew this was a good sign that they had found an area that would be good for farming. More than 65 German Pennsylvanian families, many of them Mennonites, came to Southern York Region because of, indirectly, the Black Walnut. 
- Markham Cornell P.S. - planned school to open in 2015
- Cornell Secondary School will be opening in September 2017 with a proposed secondary French Immersion program to serve east Markham and Whitchurch-Stouffville, located on Bur Oak Avenue near Cornell Community Centre.
- Two additional public school and one Catholic school is also planned by 2015.
- The York Region Catholic School Board has a site reserved for a secondary school.
- Statistics Canada. "Census Tract Statistics". Retrieved 2008-06-20.
- "2006 Community Profiles". Canada 2006 Census. Statistics Canada. March 30, 2011. Retrieved 2009-02-24.
|Old Markham Village||Locust Hill|