Seaton is bounded by West Duffins Creek to the west, Sideline 16 to the east, Highway 7 to the north, and the CP Rail line to the south; it abuts the communities of Green River, Whitevale, and Brougham.

[1] By the time of full build-out, the community is expected to include a population of up to 70,000 people and 35,000 jobs.

[2] In the early 1970s, the provincial government expropriated and purchased approximately 8,100 hectares of land in north Pickering.

[4] The Seaton lands (originally known as Cedarwood[5]), have received much attention from local residents and environmentalists.

Similar to Cornell in the adjacent City of Markham, Seaton will have planned communities built within it.