Safety & registry resources

Review official public-safety information for any area from these government sources:

U.S. Dept. of Justice National Sex Offender Public Website (NSOPW)
FBI: state sex-offender registry directory

Buy

Start here

Homes for sale by state
Home buying tips
Before you start looking
The buying timeline

Afford it

Today's mortgage rates
Mortgage calculator
How much can I afford?
Get pre-approved

Make the deal

Writing a winning offer
Inspections & appraisals
Closing costs, itemized
Find a buyer's agent

Save search Advertise Sign In

Saved homes Saved searches Your tours Your inquiries Recently viewed Account settings

Residential
Rentals

2 listings

Registered offenders on the map

Show registered offenders

Save search

Sell

Selling Options

What's my home worth?
Compare selling options
Get an instant cash offer
Buy before you sell

Resources

How selling works
When should I sell?
Home selling tips
Pricing your home
What's worth fixing first
Find a seller's agent

Home Loans

Find an Agent

Commercial Real Estate for Sale and Lease in Keystone, SD

Hide Map

2 Listings

Map

2 listings

Commercial Real Estate for Sale and Lease in Keystone, SD

Hide Map

2 Listings

Map

Commercial Real Estate for Sale and Lease in Keystone, SD

2 Listings

26Active
$2,490,000
— bd · — ba · 19,228 sqft

702 Highway 16a, Keystone, SD

Faith Lewis · Lewis Realty

31Active

$674,900

— bd · — ba · — sqft

1201A Old Hill City Road, Keystone, SD

Faith Lewis · Lewis Realty

Listing data & MLS disclosures

Mount Rushmore Area Association of REALTORS: The data relating to real estate for sale on this website comes in part from the Broker Reciprocity Program of the Mount Rushmore Area Association of REALTORS® Multiple Listing Service. Real estate listings held by brokerage firms other than Realty.com are marked with the Broker Reciprocity logo and detailed information about them includes the name of the listing brokers. Information Deemed Reliable But Not Guaranteed. The broker(s) providing this data believes it to be correct, but advises interested parties to confirm the data before relying on it in a purchase decision. Copyright ©2026 Mount Rushmore Area Association of REALTORS®, Inc. Multiple Listing Service. All rights reserved.

Keystone, SD community profile

Population: 251
Median income: $90,000
Housing units: 193
People per sq. mi.: 3.7
Area: 67 sq. mi.

Source: HJN community data

L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing data is derived from various Multiple Listing Services; each source MLS and its required disclaimer are shown with the listings on the applicable page. Realty.com is an independently owned and operated brokerage.

Listing data & MLS disclosures

Mount Rushmore Area Association of REALTORS: The data relating to real estate for sale on this website comes in part from the Broker Reciprocity Program of the Mount Rushmore Area Association of REALTORS® Multiple Listing Service. Real estate listings held by brokerage firms other than Realty.com are marked with the Broker Reciprocity logo and detailed information about them includes the name of the listing brokers. Information Deemed Reliable But Not Guaranteed. The broker(s) providing this data believes it to be correct, but advises interested parties to confirm the data before relying on it in a purchase decision. Copyright ©2026 Mount Rushmore Area Association of REALTORS®, Inc. Multiple Listing Service. All rights reserved.

Keystone, SD community profile

Population: 251
Median income: $90,000
Housing units: 193
People per sq. mi.: 3.7
Area: 67 sq. mi.

Source: HJN community data

Commercial Real Estate for Sale and Lease in Keystone, SD | Realty.com