Data as of February 2026. Source: Realtor.com.
The KEYSTONE, SD real estate market (57751) currently shows 8 active listings, with 2 pending sales. Homes are averaging 107 days on the market before going under contract.
Inventory has increased compared to last year, with 3 more homes available — giving buyers more choice.
Homes are selling faster, averaging 107 days on market compared to 147 days last year.
The median listing price has fallen 33.1% year-over-year, from $800,000 to $534,950.
Whether you are buying or selling in KEYSTONE, SD, SELL123.com can help you save significantly on commission — typically 2% compared to traditional 5% broker fees. Call (240) SELL-123 for a free consultation.
Population: 947 · Density: 8.3/mi² · Median household income: $98,393
Typical home value: $450,247 · Homeownership: 84.1%
| Zip | City / State | Distance | Listings | Market Value | Median $ | Average $ |
|---|---|---|---|---|---|---|
| 57751 | Keystone, SD 57751 | 0.0 mi | 9 | $6,499,197 | $574,500 | $722,133 |
| 57730 | Custer, SD 57730 | 14.5 mi | 40 | $34,624,960 | $662,000 | $865,624 |
| 57745 | Hill City, SD 57745 | 20.6 mi | 9 | $8,610,210 | $832,500 | $956,690 |
| 57703 | Rapid City, SD 57703 | 21.0 mi | 119 | $50,940,687 | $388,400 | $428,073 |
| 57759 | Nemo, SD 57759 | 25.2 mi | 3 | $2,264,250 | $785,000 | $754,750 |
| 57732 | Deadwood, SD 57732 | 27.8 mi | 27 | $18,633,240 | $487,500 | $690,120 |
| 57719 | Box Elder, SD 57719 | 33.2 mi | 81 | $31,967,865 | $369,900 | $394,665 |
| 57754 | Lead, SD 57754 | 35.2 mi | 112 | $143,588,704 | $999,000 | $1,282,042 |
| 82715 | Four Corners, WY 82715 | 38.8 mi | 3 | $4,074,000 | $1,200,000 | $1,358,000 |
| 57761 | New Underwood, SD 57761 | 40.9 mi | 1 | $235,000 | $235,000 | $235,000 |
| 57793 | Whitewood, SD 57793 | 45.6 mi | 14 | $9,932,034 | $525,000 | $709,431 |
| 82723 | Osage, WY 82723 | 50.4 mi | 1 | $329,900 | $329,900 | $329,900 |
| 57788 | Vale, SD 57788 | 52.9 mi | 4 | $2,926,400 | $899,900 | $731,600 |
As of February 2026, there are 8 active listings in KEYSTONE, SD (zip code 57751), compared to 5 the prior year.
The median listing price in KEYSTONE, SD 57751 is $534,950 as of February 2026, a 33.1% decrease from $800,000 the prior year.
Homes in KEYSTONE, SD 57751 spend an average of 107 days on the market before going under contract, compared to 147 days the prior year.
Based on current inventory and days-on-market data as of February 2026, KEYSTONE, SD 57751 is currently a Balanced Market. Inventory has increased compared to last year, with 3 more homes available — giving buyers more choice. Homes are selling faster, averaging 107 days on market compared to 147 days last year.
With SELL123.com's maximum 3% commission, sellers in KEYSTONE, SD 57751 save an estimated $10,699 compared to a typical 5% commission on the median listing price of $534,950. Our fee structure: 1% listing + 2% selling broker — no additional buyer or seller fees. Call (240) SELL-123 or email info@SELL123.com for a free consultation.