Keystone, South Dakota Zip Codes
Keystone is located in Pennington County, South Dakota. It has 1 zip codes serving an estimated population of 893. The area code is 605 and the time zone is Mountain.
City
Keystone
County
Pennington
Zip Codes
1
Area Code
605
Keystone is a small town in Pennington County, South Dakota, famous as the gateway to Mount Rushmore National Memorial.
All Keystone Zip Codes
| ZIP Code | City | County | Population | Type |
|---|---|---|---|---|
| 57751 | Keystone | Pennington | 893 | Standard |
Ad Unit: city-mid
Keystone Zip Code Map
Keystone Demographics Summary
893
Total Population
$97,969
Avg. Household Income
1
Zip Codes
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures.
Ad Unit: city-bottom
Frequently Asked Questions
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