House Prices

House Prices & Home Values Keystone, SD 2026


Average Data

average house price$304,000
average size per house1603 ft²
average price per ft²190 $ / ft²

04/16/2026 - The value range (VR) for house prices in Keystone, SD is $174/ sqft to $174/ sqft. An average home with 1603 sqft costs approximately $278,922 to $278,922. Keystone, SD includes 1 ZIP codes and it is located in Pennington county. The lowest prices are found in ZIP 57751, while the highest are in ZIP 57751. The average price per sqare feet is $190. Our analysis is based on 5 property listings.

Avergage prices by ZIP codes Keystone

57751167 $ / ft²




Historical development of home values in Keystone

Year Estimated value (USD) Change vs. 2025
2010 $141,183 -53.6%
2011 $135,724 -55.4%
2012 $135,358 -55.5%
2013 $140,417 -53.8%
2014 $147,400 -51.5%
2015 $154,965 -49.0%
2016 $163,052 -46.4%
2017 $171,852 -43.5%
2018 $181,353 -40.3%
2019 $189,762 -37.6%
2020 $199,572 -34.4%
2021 $226,992 -25.3%
2022 $264,622 -13.0%
2023 $279,056 -8.2%
2024 $295,199 -2.9%
2025 $304,000 0.0%

Graph: estimated home values in Keystone over time (USD)



Example: 100% financing house in Keystone

Loan amount: $304,000

Interest rate: 6.00%

Fixed monthly payment: $1,822.63

Breakdown in the 1st month:
Interest portion: $1,520.00  –  Principal portion: $302.63

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $18,138.45 $3,733.16 $300,266.84
2 $17,908.19 $3,963.41 $296,303.44
3 $17,663.74 $4,207.86 $292,095.57
4 $17,404.21 $4,467.39 $287,628.18
5 $17,128.67 $4,742.93 $282,885.24
6 $16,836.14 $5,035.47 $277,849.78
7 $16,525.56 $5,346.04 $272,503.73
8 $16,195.83 $5,675.78 $266,827.96
9 $15,845.76 $6,025.85 $260,802.11
10 $15,474.10 $6,397.51 $254,404.60
11 $15,079.51 $6,792.09 $247,612.51
12 $14,660.59 $7,211.01 $240,401.50
13 $14,215.83 $7,655.77 $232,745.73
14 $13,743.64 $8,127.96 $224,617.77
15 $13,242.33 $8,629.28 $215,988.49
16 $12,710.09 $9,161.51 $206,826.97
17 $12,145.03 $9,726.58 $197,100.40
18 $11,545.11 $10,326.49 $186,773.91
19 $10,908.20 $10,963.40 $175,810.51
20 $10,232.00 $11,639.60 $164,170.90
21 $9,514.09 $12,357.51 $151,813.39
22 $8,751.91 $13,119.69 $138,693.70
23 $7,942.72 $13,928.89 $124,764.81
24 $7,083.61 $14,787.99 $109,976.83
25 $6,171.52 $15,700.08 $94,276.74
26 $5,203.18 $16,668.43 $77,608.32
27 $4,175.10 $17,696.50 $59,911.82
28 $3,083.62 $18,787.98 $41,123.84
29 $1,924.82 $19,946.78 $21,177.06
30 $694.55 $21,177.06 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Keystone, SD


1500 sqft3900 sqft
Ø selling price$344,850$733,591
Ø fast selling$313,500$660,231
Ø high price sale$376,201$806,950

In 2026, houses in Keystone, SD will be offered at an average price of $190 per square foot. A 1,500 sqft home priced at $344,850 is 22.06% more expensive per square foot than a 3,900 sqft home priced at $733,591. Home prices in Keystone, SD vary significantly depending on the neighborhood and location. For a quick sale, a 2,700 sqft home should be listed at around $507,871. Sellers who can wait longer may achieve a higher price of up to $620,730.

FAQ – Home Values in Keystone

What is the median home value in Keystone in 2026?

In 2026, the typical home value in Keystone is about $304,000 for an average home size of 1603 square feet. This corresponds to an average price of roughly $190 per square foot.

What is the average cost per square foot in Keystone?

In 2026, homes in Keystone sell for an average of around $190 per square foot, with a typical range between $174 and $174 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in ?

The average home size in Keystone is about 1603 square feet, with an estimated 2026 value around $304,000.



Locations close to Keystone, SD

Kyle, SD1574 $ / ft²
Lead, SD183 $ / ft²
Ludlow, SD240 $ / ft²
Interior, SD1839 $ / ft²
Howes, SD157 $ / ft²
Hot Springs, SD176 $ / ft²
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