Cite State Capitals and Largest Cities Updated February 23, 2017 | Factmonster Staff The Question: How many state capitals are also the largest cities in their states? The Answer: Seventeen. If you'd like to compare a list of capitals to largest cities in the United States, check this out. -The Fact Monster ? MoreFeaturesGamesPollsTimelinesQuizzes See also: Best Beaches in the U.S.