Question: What is the smallest state capital in the United States?
Answers: When you say smallest, do you mean in terms of population or land area?
Doesn't matter. With a population of fewer than ten thousand people and just 10 square miles in size, Montpelier, Vermont is the smallest state capital in the United States.
Pierre, the capital of South Dakota, is about 13 square miles and has about 15,000 people.
*Trivia: Montpelier's twin city is Barre and together they are part of a "micropolitan" area that has about 60,000 people.
And how about largest?
In terms of size, Juneau, Alaska, is the largest; it's about 3,000 square miles. Phoenix is the largest in population among the fifty state capitals; it has about 1.5 million people.