57751
Keystone, South Dakota.
Keystone, Pennington County, SD · Rapid City, SD metro · population 893
to buy the typical home at today's mortgage rate — +$1,679 (+149%) since Jan 2020.
- 1 year
- Up $17,156 +3%
- $517,693$534,849 since Sep 2025
- 5 years
- Up $132,430 +33%
- $402,419$534,849 since Sep 2021
Monthly payment to buy the typical home
Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.
- 57751$2,807
- United States$1,922
At the last five years' pace, a typical home here doubles in price every 12 years.
Typical home values in zip 57751 rose 3.3% over the past year — faster than the nation's +1.2%.
This zip spans 2 counties: Pennington County, SD 67% · Custer County, SD 33%
Zillow also publishes an index for the city itself: Keystone, SD — measured over the city limits, which is a different area from this zip.
Typical home value — 57751
Mid-tier homes, smoothed and seasonally adjusted.
- 57751$534,849
- Rapid City$370,125
- United States$366,157
Within 20 miles
| Miles sorted ascending, activate to sort descending | Zip activate to sort by Zip | City activate to sort by City | Population activate to sort by Population | Rent activate to sort by Rent | Home value activate to sort by Home value |
|---|---|---|---|---|---|
| 11.4 | 57702 | Rapid City | 35,595 | $1,465 | $451,766 |
| 14.5 | 57730 | Custer | 5,596 | — | $477,267 |
Coordinates and population from SimpleMaps US Zips (Basic). Rent and home values from Zillow Research.