Keystone, SD 57751 ZIP Code Profile

Related Place Profiles:
Keystone, SD

ZIP Code 57751: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Keystone, SD 57751

  • ZIP Code Type: STANDARD
  • County: Pennington County
  • Centroid: Latitude 43.943, Longitude -103.362
  • Time Zone: Mountain Time Zone (UTC -7 hours)
  • Observes DST: Yes
  • Businesses Addresses: 94
  • PO Box Addresses: 120
  • Residential Addresses: 280
    • Multi-Family Addresses: 8
    • Single Family Addresses: 272

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

Jump to... (On This Page!)
  1. 57751 2018 Demographic Data
  2. Growth Rates for 57751 (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.


Keystone, SD 57751 Data & Demographics (As of July 1, 2018)


Total Population 951
Population in Households 939
Population in Familes 751
Population in Group Qrtrs 12
Population Density2 20
Diversity Index3 23


Median Household Income $70,798
Average Household Income $102,536
Per Capita Income $45,076


Total Housing Units 603 (100%)
Owner Occupied HU 319 (52.9%)
Renter Occupied HU 96 (15.9%)
Vacant Housing Units 188 (31.2%)
Median Home Value $315,217
Average Home Value $352,429


Total Households 415
Average Household Size 2.26
Family Households 278
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 0.92% 0.95%
Households 0.88% 0.85%
Families 0.58% 0.71%
Median Household Income   2.42%
Per Capita Income   1.93%

Keystone, SD 57751 - Peer Comparisons by Rank and Percentile

The table below compares 57751 to the other 368 ZIP Codes 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 # 146 61st
Population Density # 63 83rd
Diversity Index # 108 71st
Median Household Income # 23 94th
Per Capita Income # 6 99th

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

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Compare South Dakota July 1, 2018 Data
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