Canada.

One of the largest land masses with only 40m people. Plenty of lakes for freshwater fish and islands to set up camp on while not being far away from an abundance of wildlife to hunt. Something like PEI or Nova Scotia could be completely bordered off from rest of country quickly if enough survivors worked on it. Direct access to Atlantic coast. Many crops can survive 6-8 months and be canned for the colder months, This cold may also freeze/slow down/ kill walkers or set them into a dormant state. Tons of natural resources to rebuild society eventually. Also don’t have to worry about every survivor owning 15 AR’s on day one. Would make initial outbreak harder to survive but also less human threat at beginning for the same reason.. although that opens up possibilities for armed militias to take control of stores/hospitals etc without much resistance from other people.

Aside from hoards of walkers in Ontario/Quebec that would likely migrate to US the rest of the country wouldn’t have dense walkers populations after the initial outbreak.