Simply looking at the city's borders, sure.... but the Cincinnati MSA is larger than Columbus.... also something to note, most of Cincinnati's growing neighborhoods are to the north(mason/liberty areas), which is just south of Dayton....

Part of my construction crew lives near the border so getting up there isn't too challenging for us, but the traffic that @Mike Nuss called out is no joke for most Portlanders. 

I would like to point out that NC real estate is quite high right now, but just over the border in Southwest Virginia can be incredibly affordable by comparison.

@Hannah Canario  I have a property in North Bergen as well close to the Jersey City border and I've been able to find good tenants through the sites mentioned above.

But Like I said, this is not legal/tax advice and you should consult with a cross border specialist before making any move.  

I think 5 is probably the correct number to have.With everyone else that having Boston and Cambridge as different sub sections makes no sense since they border each other.  

@Derreck WellsThis property is actually right over the Maine border in NH.

Both the Royal Bank and TD have cross border programs that may be able to help.

It bordered the national forest and about 10 pine trees 40-50 feet high. 

Seems they aggregate all crime and group them by some meaningless border less census tract or something.