This map by General Electric shows, by relative size, the proportion of electrification among the United States:
New York ranks first, having an electrical population (served by central stations) of 8,620,700, or 78.7 per cent of its actual population. The second largest state is Pennsylvania, with an electrical population of 6,330,000, or 68.8 per cent of the actual population; third, Illinois, with 5,150,000, or 79.8 per cent; fourth, Massachusetts, with 4,030,000 or 97,8 per cent; fifth, Ohio, with 3,550,000, or 66.1 per cent, and sixth, California, with 2,827,000, or 86.5 per cent.
At the bottom of the list is Nevada, squeezed into a tiny circumference on the map, because it has only 66,300 persons served by central power stations, which, however, is 54.3 per cent of its actual population.
Note the size of the District of Columbia on the map.