Again, this sort of graph is true of every state. Look up NY. One blue county. But it’s where everyone lives. Hennepin and Ramsey county have to be where 30% of the states population lives. You can’t just discount it on a county by county basis.
Look up Illinois - same thing re: Cook County
Look up NJ - Same thing after Hudson, Essex and Camden counties... All with big cities.
Real estate doesn’t vote, people do. Those blue counties have a lot more people in them than the red counties do.