Norfolk County is a rural single-tier municipality on the north shore of Lake Erie in Southwestern Ontario, Canada with a 2016 population of 67,490. Despite its name, it is no longer a county by definition, as all municipal services are handled by a single level of government. The largest community in Norfolk County is Simcoe, whose 2016 population was 13,922. The other population centres are Port Dover, Delhi, Waterford and Port Rowan, and there are many smaller communities. For several years in the late 20th century, the county was merged with Haldimand County but the merged entity was dissolved in 2000.

Simcoe is an unincorporated community and former town in Southwestern Ontario, Canada near Lake Erie. It is the county seat and largest community of Norfolk County. Simcoe is at the junction of Highway 3, at Highway 24, due south of Brantford, and accessible to Hamilton by nearby Highway 6. The largest of the communities in Norfolk County, Simcoe had a population of 16,121 at the time of the 2021 Census.