Population shares across rurality groups by Road Ruggedness Scale, 2010

Bar chart comparing the share of U.S. population living in urbanized areas, urbanized commuting areas, and rural areas by Road Ruggedness Scale category in 2010.

The intersection of rugged terrain and economic activity remains understudied, so USDA, Economic Research Service researchers developed two classifications of U.S. census tracts: the six-level Area Ruggedness Scale and the five-level Road Ruggedness Scale.

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