Georgia offers a tax credit for electric vehicles that is equal to 20% of the vehicle’s cost, up to a maximum amount of $5,000. California has many charging stations, which might have contributed to its presence in the list above, but it also offers a $2,500 incentive for electric vehicles. (The charging stations may just be in place due to the high electric car ownership in the state… it’s that whole chicken & egg question again.)

New York City has its own EV policies that surely helped stimulate EV adoption a bit, but the fact that it is the largest city in the US (by far) is also surely a factor.