Go Mainers! How to refer to the natives of the States

Notice the heading is nationalities, as in citizens of a nation.

Nationalities, etc. 
5.22. 	The table on Demonyms in Chapter 17 ``Useful Tables'' shows 
        forms to be used for nouns and adjectives denoting nationality. 

5.23. 	In designating the natives of the States, the following forms 
        will be used.  

          Alabamian             Louisianian             Ohioan  
          Alaskan               Mainer                  Oklahoman  
          Arizonan              Marylander              Oregonian  
          Arkansan              Massachusettsan         Pennsylvanian  
          Californian           Michiganian             Rhode Islander  
          Coloradan             Minnesotan              South Carolinian  
          Connecticuter         Mississippian           South Dakotan  
          Delawarean            Missourian              Tennessean  
          Floridian             Montanan                Texan  
          Georgian              Nebraskan               Utahn  
          Hawaiian              Nevadan                 Vermonter  
          Idahoan               New Hampshirite         Virginian  
          Illinoisan            New Jerseyan            Washingtonian  
          Indianian             New Mexican             West Virginian  
          Iowan                 New Yorker              Wisconsinite  
          Kansan                North Carolinian        Wyomingite  
          Kentuckian            North Dakotan  
From:
[U.S. Government Printing Office Style Manual]
[Chapter 5 - Spelling]