Zip Code 57751 Map and Profile

Official Zip Code NameKeystone
Zip Code StateSouth Dakota
Zip Code TypeNon-Unique
Primary County: Pennington
Secondary County: Custer
Area Code605
Current Population:844
Racial Majority:White 84.07%
Unemployment Rate:2.6%
Median Household Income$48792
Average Adjusted Gross Income$60430
School Test Performance:Poor
Average Commute Time22.6 Minutes
Time Zone:Mountain Daylight Time
Elevation Range3760 - 5899 ft.
Area43 Sqm.
Coordinates(Y,X)43.87214200, -103.42320200

Zip Code 57751 Description

Zip Code 57751 is located in the state of South Dakota in the Rapid City metro area. Zip code 57751 is primarily located in Pennington County. Portions of 57751 are also located in Custer County. The official US Postal Service name for 57751 is KEYSTONE, South Dakota. Portions of zip code 57751 are contained within or border the city limits of Keystone, SD, . The area code for zip code 57751 is 605. 57751 can be classified socioeconically as a Lower Middle Class class zipcode in comparison to other zipcodes in South Dakota.

The current unemployment level in 57751 is 2.6% which is higher than the current county unemployment level of 2.6% and is lower than the current state unemployment at 2.7% and lower than the current national unemployment rate at 5.2%.

According the 2010 US Census, the population of 57751 increased to 844 from 714 over the past 10 years. The majority ethnicity residing in 57751 is White while the majority ethnicity attending 57751 public schools is . % of students in 57751 public schools receive or are eligible to participate in free or reduced lunch programs.

 White 586 84.07% 768 -24%
 Black Or African American 9 1.29% 1 +800%
 Hispanic 37 5.31% 31 +19%
 American Indian Or Alaskan Native 15 2.15% 20 -25%
 Asian 35 5.02% 3 +1067%
 Native Hawaiian & Other Pacific Islander 0 0% 1 -100%
 Other Race 0 0% 0 +0%
 Two Or More Races 20 2.15% 20 -25%

Zip Code 57751 Race/Ethnicity

 White %
 Black Or African American %
 Hispanic %
 Asian %
 Hawaii/Pacific Islander %
 American Indian Or Alaskan Native %
 Two or More Races %

Zip Code 57751 Public School Race/Ethnicity Profile

Total Population844714
Male Population50.50%
Female Population49.50%
Total Households375
Test Score PerformancePoor
Percentage of Students Eligible For
Free or Reduced Lunch
Percentage of Public Schools with
Title 1 Status
Median Household Income$48792
Income Under $50K Per Year51.30%
Income $50K to $100K Per Year30.30%
Income Above $100K Per Year18.50%
57751 US Congressional District
DistrictRepresentativeParty Affiliation
South Dakota District 1
Related Maps: Map of All South Dakota Congressional Districts

Average Real Estate Asking Price$237636
Average Real Estate Sale Price$174075
Current Unemployment Level 2.6%
Previous Month Unemployment Level3.4%
Unemployment Level 1 Year Ago5.0%
Keystone, SD
2012 Hardiness ZoneZone 5a: -20F to -15F
1990 Hardiness ZoneZone 5a: -20F to -15F
Köppen Climate ClassificationDfa - Humid Continental Hot Summers
Ecoregion 17b - The Black Hills Plateau
Average First Frost DatesSeptember 21 - 31
Average Last Frost DatesMay 11 - 20

Zip Code 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
Core Based Statistical
Area (CBSA)
Rapid City, SD
CBSA Type57751
CBSA Population126368
Time ZoneMountain Daylight Time
IANA Time ZoneAmerica/Denver
Follows DSTYes
GMT Difference-7 Hours