ZIP Code 57751 - Keystone South Dakota

ZIP Code 57751 is located in Keystone South Dakota. Portions of 57751 are also in Mount Rushmore and East Custer and Keystone (town) and West Pennington. 57751 is primarily within Pennington County, with some portions in Custer County. Regionally, it is located in the Rapid City Area.

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ZIP Code 57751 Quick Stats

ZIP Code NameKeystone
Primary CountyPennington County
ZIP Code TypeStandard
Population (2022)947
Area Code(s)605
Current Time

ZIP Code 57751 Map

57751 Demographics

57751 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in South Dakota based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 57751 is White. The current unemployment level in 57751 is 3.1%.

Population Growth Rate14.37%
Population Density16 People per Square Mile
Total Households371
Percentage High Income Households6.7%
Median Houshold Income (2021)$75,893
Average Adjusted Gross Income (2020)$63,200
Current Unemployment Rate (February 2024)3.1%
Majority Race/EthnictyWhite - 87.05%

57751 Race/Ethnicty Breakdown

Native American80.78%
Hawaiian/Pac. Islander00%

57751 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College294.99%
Bachelor Degree9015.49%
High School Diploma18531.84%
No High School Diploma00%
GED or Alternate183.1%
1 or More Years of College14725.3%
Associates Degree335.68%
Masters Degree579.81%
Professional Degree152.58%
Doctorate Degree71.2%

57751 Geography

Adjacent ZIP Codes
Cities/Towns in 57751
RegionRapid City Area
Metropolitan/Micropolitan Stat AreaRapid City, SD
Time ZoneMountain Standard Time
IANA TimezoneAmerica/Denver
Area60 Square Miles

57751 Politics

South Dakota State Senate Districts in 57751
South Dakota State House of Representatives Districts in 57751

57751 Weather and Climate Data

Plant Hardiness ZoneZone 5a: -20F to -15F
Average First Frost DateSeptember 21 - 31
Average Last Frost DateMay 11 - 20
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion17b - The Black Hills Plateau

57751 Annual Climate Data

Avg Min Temp (°F)15182331415057564736241734
Avg Max Temp (°F)34374452627380797057423656
Avg Precip (In.).37.521.12.183.773.633.031.991.471.46.65.4420.61

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