Earlier quoted context omitted.
Ontario is culturally 2 provinces, southern and northern Ontario. The north is what you normally think of Canada: rocks, trees and lakes. The south is similar to the neighbouring US states of Michigan, Ohio, and New York but with a distinct Canadian identity and a French region in the east. Most of the population (13.4M) lives in the southern part (114,000 km^2)
Still a bit too general. Southwestern Ontario (Windsor/London) is very culturally and demographically different from Toronto/Golden Horseshoe and Eastern Ontario (Ottawa/Kingston) Michigan is also culturally different from New York.
Michigan and Ohio are most similar to SW but upstate NY also bleeds culturally into the region, both around Niagara and the thousand islands.