So - on a state by state / province by province basis, Americans live more close together than Canadians and should have better opportunity for maintaining infrastructure.
https://en.wikipedia.org/wiki/List_of_U.S._states_by_populat...
And just like Canadians tend to cram together close to the coasts and the Great Lakes, Americans also cram together close to the Great Lakes and their coasts. Go 50 miles inland from either coast, and it's vastly less populated than near the coast, with the rivers as an exception. Take a drive from Buffalo to NYC, and you'll see that it's populated near Buffalo (Great lakes), somewhat near Albany (Hudson river) and again once you get near NYC (East Coast). The rest of NY State is rural.
Take a look at this map of US population density by county: http://i.imgur.com/hY8tpOn.jpg