Rapid City, SD Profile: Facts & Data


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Rapid City, South Dakota - Basic Facts

The City of Rapid City is the 2nd largest city in South Dakota with a population of 75,173 as of July 1, 2018. Rapid City ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in South Dakota. See peer rankings below.

The primary coordinate point for Rapid City is located at latitude 44.0711 and longitude -103.2179 in Pennington County. The formal boundaries for the City of Rapid City (see map below) encompass a land area of 55.44 sq. miles and a water area of 0.08 sq. miles. Pennington County is in the Mountain time zone (GMT -7). The elevation is 3,241 feet.

The City of Rapid City (GNIS ID: 1267543) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Alternate Unofficial Names for Rapid City: Hay Camp, Rapid.

Jump to... (On This Page!)
  1. Rapid City 2018 Demographic Data
  2. Growth Rates for Rapid City (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. South Dakota Research Tools (Easy Tools & Current Data)
  3. South Dakota Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Rapid City, SD Data & Demographics (As of July 1, 2018)


Total Population 75,173
Population in Households 72,745
Population in Familes 54,476
Population in Group Qrtrs 2,428
Population Density2 1,356
Diversity Index3 43


Median Household Income $49,733
Average Household Income $68,695
Per Capita Income $29,426


Total Housing Units 33,198 (100%)
Owner Occupied HU 18,749 (56.5%)
Renter Occupied HU 12,719 (38.3%)
Vacant Housing Units 1,730 ( 5.2%)
Median Home Value $174,717
Average Home Value $212,511


Total Households 31,468
Average Household Size 2.31
Family Households 18,410
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2018 2018-2023
Population 1.23% 1.18%
Households 1.17% 1.15%
Families 1.0% 1.0%
Median Household Income   1.68%
Per Capita Income   1.99%

Rapid City, SD - Peer Comparisons by Rank and Percentile

The table below compares Rapid City to the other 391 incorporated cities, towns and CDPs in South Dakota by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 2 100th
Population Density # 44 89th
Diversity Index # 45 89th
Median Household Income # 221 44th
Per Capita Income # 180 54th

Additional comparisons and rankings can be made with a VERY EASY TO USE South Dakota Census Data Comparison Tool.

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