US States

I’ll partition the states into groups of 7 sorted by population density.
In[]:=
PartitionEntityValueSortedEntityClass
all US states with District of Columbia
ADMINISTRATIVE DIVISIONS
,"PopulationDensity","Entities",UpTo[7]
Out[]=

Alaska, United States
,
Wyoming, United States
,
Montana, United States
,
North Dakota, United States
,
South Dakota, United States
,
New Mexico, United States
,
Idaho, United States
,
Nebraska, United States
,
Nevada, United States
,
Kansas, United States
,
Maine, United States
,
Utah, United States
,
Oregon, United States
,
Colorado, United States
,
Arkansas, United States
,
Oklahoma, United States
,
Iowa, United States
,
Mississippi, United States
,
Arizona, United States
,
Minnesota, United States
,
Vermont, United States
,
West Virginia, United States
,
Missouri, United States
,
Louisiana, United States
,
Wisconsin, United States
,
Alabama, United States
,
Michigan, United States
,
Washington, United States
,
Texas, United States
,
Kentucky, United States
,
Hawaii, United States
,
New Hampshire, United States
,
South Carolina, United States
,
Tennessee, United States
,
Georgia, United States
,
Indiana, United States
,
North Carolina, United States
,
Virginia, United States
,
Illinois, United States
,
California, United States
,
Ohio, United States
,
Pennsylvania, United States
,
Florida, United States
,
New York, United States
,
Delaware, United States
,
Maryland, United States
,
Connecticut, United States
,
Massachusetts, United States
,
Rhode Island, United States
,
New Jersey, United States
,
District of Columbia, United States


Group 1 Alaska, Wyoming, Montana, North Dakota, South Dakota, New Mexico, and Idaho

In[]:=
BorderingMap
US boroughs in Alaska
ADMINISTRATIVE DIVISIONS
,"BorderingCounties",ColorData[1,"ColorList"]
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BorderingMap
US counties in Wyoming
ADMINISTRATIVE DIVISIONS
,"BorderingCounties",ColorData[1,"ColorList"]
Out[]=
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BorderingMap
US counties in Montana
ADMINISTRATIVE DIVISIONS
,"BorderingCounties",ColorData[1,"ColorList"]
Out[]=
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BorderingMap
US counties in North Dakota
ADMINISTRATIVE DIVISIONS
,"BorderingCounties",ColorData[1,"ColorList"]
Out[]=
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BorderingMap
US counties in South Dakota
ADMINISTRATIVE DIVISIONS
,"BorderingCounties",ColorData[1,"ColorList"]
Out[]=
In[]:=
BorderingMap
US counties in New Mexico
ADMINISTRATIVE DIVISIONS
,"BorderingCounties",ColorData[1,"ColorList"]
Out[]=
BorderingMap
US counties in Idaho
ADMINISTRATIVE DIVISIONS
,"BorderingCounties",ColorData[1,"ColorList"]
Out[]=

Group 2 Nebraska, Nevada, Kansas, Maine, Utah, Oregon, and Colorado