These code values are adapted from the Library of Congress's geographic naming
tables:
Code
Geography
370[ 0-9 ]
United States
371[ 0-9 ]
Northeast Atlantic
372[ 0-9 ]
New England
373[ 0-9 ]
Maine
374[ 0-9 ]
New Hampshire
375[ 0-9 ]
Vermont
376[ 0-9 ]
Massachusetts
377[ 0-9 ]
Rhode Island
378[ 0-9 ]
Connecticut
379[ 0-9 ]
Middle Atlantic
380[ 0-9 ]
New York
The digit in brackets [0-9] above can be one of the following:
Code
Geography Type
0
Regional Geographies
1
Mathematical Geographies
2
Physical Geographies
3
Major Administrative Geographies
4
Minor Administrative Geographies
5
Designated Geographies
6
Census Geographies
7
Reserved
8
Reserved
9
Reserved
Now we extend the codes for particular types of geographical definitions,
loosely based on the Library of Congress. Think of these as the cookie cutter
shapes that make the coverage boundaries. The following example is for 378[0-9],
Connecticut.
