Frankfort is the capital of Kentucky and had a population of 27,679 in 2010, which is close to Dover's 36,047.
Montpelier is the capital of Vermont and had a population of 7,855 in 2010, which is the smallest among all state capitals, but still within the same order of magnitude as Dover's.
Pierre is the capital of South Dakota and had a population of 13,646 in 2010, which is also relatively small compared to most state capitals, but similar to Dover's.
Helena is the capital of Montana and had a population of 28,190 in 2010, which is close to Dover's 36,047.
Augusta is the capital of Maine and had a population of 19,136 in 2010, which is also in the same range as Dover's.