Table 6 Definition of each rural-urban code
From: Estimation of exposure to toxic releases using spatial interaction modeling
Code | Description |
|---|---|
| Â | Counties in metropolitan areas |
0 | Central counties of metropolitan areas of 1 million population or more. |
1 | Fringe counties of metropolitan areas of 1 million population or more. |
2 | Counties in metropolitan areas of 250,000 to 1 million population. |
3 | Counties in metropolitan areas of fewer than 250,000 population. |
| Â | Counties not in metropolitan areas |
4 | Urban population of 20,000 or more, adjacent to a metropolitan area. |
5 | Urban population of 20,000 or more, not adjacent to a metropolitan area. |
6 | Urban population of 2,500 to 19,999, adjacent to a metropolitan area. |
7 | Urban population of 2,500 to 19,999, not adjacent to a metropolitan area. |
8 | Completely rural or less than 2,500 urban population, adjacent to a metropolitan area. |
9 | Completely rural or less than 2,500 urban population, not adjacent to a metropolitan area. |