Rapid City is the second most populous city in South Dakota and the county seat of Pennington County. Named after Rapid Creek, where the settlement developed, it is in western South Dakota, on the Black Hills' eastern slope. The population was 67,956 as of the 2010 Census.Known as the "Gateway to the Black Hills" and the "City of Presidents" because of the life-size bronze president statues downtown, Rapid City is split by a low mountain ridge that... Show more

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