Regarding a former U.S.-administered territory, the residents of the Canal Zone in Panama were known as Zonians (really).
I’ve heard So-Dakker for South Dakota residents.
“Washingtonians” is what I always hear (and Washingtonian is the name of a DC magazine), but it’s the same term used by folks in the great northwest. “DCers” is awkward to say, but I vote for something like it – something that specifies which Washington is being called “home.” Hmm, how about “Districtonians?” 
“The Delaweenians didn’t stand a chance.” - Rev Jim Ignitowski
Tennessee – M’am, Sir
Not a state, but - Seatellites?
What with the Space needle and all.
Or “Capitolists” ?
Did the ever-so-logical South Dakotans fall flat?
I don’t believe I ever heard a term other than “resident of Northwest Territories” or “Northwest Territories native/resident”.
Delaware doesn’t exist, so I don’t know why you all keep trying to come up with a name for it.
That’s strange because I’m a south Walian
:dubious:
“My aunt Helen–She’s a M’am. She married a Sir, then they moved to Illinois.”
I don’t think so.
Ambrose Bierce used Jerseyman for an inhabitant of New Jersey. I like the sound of that better than cacophonies such as New Jerseyan or New Jerseyite. But today you’d have to make it sex-neutral, and Jerseyperson just doesn’t have the same ring.
It’s hard to come up with an inhabitant noun from Massachusetts that doesn’t sound like a sneeze. I’ve heard some use Bay Stater, which gets around the issue pretty nicely.
My favorite, though, is for inhabitants of Utah. You see Utahn in the Salt Lake Trib and the Deseret News all the time. It looks like it ought to have another vowel in there, and that makes it particularly appealing.
When I lived in Missouri, the Show Me State, I referred to native Missourians as “ShowMees,” admittedly because I’m not very clever.
“Hamsters”.
-NE Texan (former Hamster).
But that has, like one whole extra syllable!
Actually, I’ve always thought that people from Florida should be called Flora
And people from Montana are Mountains . . .
And if you’re from Kansas, you’re a Kan . . .
Well, it’s a bit complicated. Some folks from the Rock are okay with Newfie - but others are not, and take it as an insult, because of all the Newfie jokes - sort of like assuming that “Polack” is acceptable to refer to those of Polish ancestry.
For example, at this site someone has posted some tongue-in-cheek advice on how to get by in Newfoundland:
And on this message board you can see both attitudes expressed:
And of course there is the Stompin’ Tom Connors song, “The Man in the Moon is a Newfie.”
Since there are feelings both ways over the term “Newfie”, my personal practice is to use “Newfoundlander” unless I’m sure that the term “Newfie” won’t offend.
However, since a recent constitutional amendment, there is another problem, which matt’s post highights. When the official name of the province was “Newfoundland”, the term “Newfoundlander” could be used to mean either a resident of the island, or a resident of the province, including Labrador on the mainland. But now that the official name of the province is “Newfoundland and Labrador”, the term “Newfoundlander” presumably only means someone from the island, and “Labradorian” similarly only means someone from the mainland portion of the province. But what do we call a resident of the province? A Newfoundlander and Labradorian? Awfully long and cumbersome. A New-Lab? sounds too much like a Tony Blair supporter.
So many issues, so little time…
A very common usage in the NWT to refer to Newfoundlanders is to call the ‘Newfs’. There’s a very large Newfoundlander population up there.
I’ve never heard anyone use the term “Michiganite.” Michigander and Michiganian are both commonly used, however.
Also, one of the guys at work was vacationing in Maine recently. Apparently, Masshole is an extremely popular term for people from the Bay State. Especially when you’re driving and they just cut you off. 
These are all easy. Try being from Tampa.