Idaho is losing too much open space, including farmland, according to a new voter survey and study. Idaho’s rate of population growth led the U.S. during the past decade and drives development that consumes agricultural ground and other open spaces, said Leon Kolankiewicz, scientific director for NumbersUSA, a nonprofit that advocates for less immigration. Some 77% of the sprawl in Idaho counties from 1982 to 2017 was related to an increase in the number of residents, he said. A rise in per-capita land consumption drove the rest, referring to the average amount of land occupied by each person