I’m not a native here so my impressions may not mean much but …
Here in St. Louis, Missouri, the greater metro area is the largest in the state. It’s also right on the border with Illinios. Over the river in IL there is the rusted-out hulk of East St. Louis and a few small towns which have recently grown into bedroom communities (e.g. Edwardsville, Collinsville); the rest is rural.
The MO folks feel like 100% real MO-ers & ignore the IL side almost completely. The only thing it’s well known for is a couple of concentrations of nudie clubs. Any really good stag bar-crawl through the city ends over there. Other than that, IL is pretty much out-of-sight out-of-mind for MO folks.
Meanwhile, the majority of the IL folks living in those towns commute to MO for work. They’d be the ones with the interesting attitudes.
Most MO businesses within 40 miles of the border have some IL residents working there. There is often a good natured rivalry about who lives on the wrong side of the border, usually referring to taxation & such.
My non-native take is that the tax burden is almost identical, just distributed differently between income taxes, property taxes, and nuisance fees. Which ensures that each side can claim they’re the better place just by concentrating on one aspect & ignoring the others.
The other major metro area in MO is Kansas City, which also straddles a state border: MO/KS. That one is less lopsided, with a lot of the recent growth being suburbs in KS. In feel & attitude, KC & STL are very different. Folks talk of STL as the USA’s westernmost Eastern city & KC as the easternmost Western city. Having grown up in the real West & having visited KC a bunch, I can see what they mean.
In St. Louis we tend to think of MO as 3 distinct entities. Good ol’ traditional STL, scruffy KC, and the unwashed “out counties” full of ill-shod illiterate ill-tempered but heavily-armed yokels.
The KC folks think of shiny KC, rotten old STL, and the unwashed out counties full of ill-shod illiterate ill-tempered but heavily-armed yokels.
The unwashed out counties think of themselves as the true salt of the earth, Honest God-fearing People® while STL & KC are just corrupt crime holes full of welfare sucking (insert alternate term for non-white people).
As you can imagine, our state legislature is good for a laugh, but is not real effective. Especially after you notice that the out counties have the vast majority of the seats while STL+KC have the vast majority of the population & provide the vast majority of the tax revenue.
This turned into a bit of a hijack but I think it’s still relevant to the big question of residents’ identification with their state’s “identity”, whatever that means.