Keystone
Property Data

Pennington County, South Dakota

Explore accurate parcel and ownership records,
directly sourced from county assessors.

Pennington County

ZIP Codesby Total Population

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Total Population
893893

DistributionTotal Population

No data available

Demographics

Total Population

893

Median Age

54.2

Population Under 18

19.5%

Population 65+

23.4%

Total Households

327

Average Household Size

2.67

Keystone, SD housing and demographic statistics

ZIP/ZCTA areas can cross city and county boundaries. Each row describes its ZIP/ZCTA area, not the city as a whole. These values are not combined into a city estimate.

Individual ZIP/ZCTA estimates associated with Keystone, SD
ZIP/ZCTAPopulationMedian household incomeMedian monthly gross rentOwner-occupied share
57751893$97,969$60085.6%

Source: U.S. Census Bureau American Community Survey (ACS), 2020–2024 five-year estimates, via Realie. Measurement period: –. Published by the Census Bureau on ; published by Realie on . These are five-year estimates, not a measurement of current conditions. — indicates unavailable or suppressed data.

Area property statistics

Recorded property characteristics and residential parcel-sale records for Keystone, SD. Sale amounts describe recorded transfers, not asking prices or appraisals. Each measure uses records with that information available.

Sale records use the AVM's residential, amount, floor-area, year-built, price-per-area, deed, buyer-relationship and distress filters. Known multi-parcel deals are also excluded. Unknown package flags are not proof of a single-parcel sale. Counts represent eligible parcel sale records. Recorded annual averages require at least 10 eligible sales. Projections must have enough history and pass checks against earlier recorded sales. Recent sales can be underreported; different coverage between years can affect the changes.

City measurements cover the selected county's portion of the city.

Annual sales comparison

Calendar 2025 recorded sales versus calendar 2026 model projections. Both years cover January 1–December 31. Change compares the 2026 projection with the recorded 2025 value. Annual average amounts weight each month by its sales count; they are not monthly medians.

Calendar-year sales comparison
Metric20252026 projectedChange (%)
Residential sale records0Recorded——
Average recorded sale amount———

Projections are not confirmed transactions or property valuations. Recent sales can be underreported; different coverage between years can affect the change. Unsupported values remain unavailable. Ranges reflect historical model errors, not confidence intervals. Annual comparison calculated . Assumed observation cutoff: March 2024; not verified completeness.

Recorded property statistics

Reported property statistics for Keystone, SD
MeasureKeystone, SDPennington County, SD
Average recorded floor area (sq ft)2,2132,071
Average recorded bedrooms2.73.2
Average recorded bathrooms1.92
Median year built19881981
Condominium share of properties0%0%

Keystone, SD: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 24, 2026. Calculated . Published . Dataset last refreshed: .

Pennington County, SD: Recorded median and percentile amounts: May 7, 2025–Oct 28, 2026.

County input file published Oct 24, 2026. Calculated . Published . Dataset last refreshed: .

Source: Realie property-record aggregates. Input publication and calculation dates do not establish complete transaction coverage. Missing measures are shown as — or omitted.

Other recent-period estimates

These use different periods from the calendar-year comparison. Estimates extend parcel-record counts and recorded amounts; they are not confirmed current transactions or individual-property values.

No supported recent-period estimates are available for this area. Recorded statistics above remain available.

Transaction coverage has not been verified. Known multi-parcel deals are excluded; missing package flags do not establish that every remaining sale covers one parcel. Amount change compares monthly record medians, not the appreciation of the same homes. Ranges reflect historical model errors; they are not confidence intervals and can exclude the point estimate. Assumed observation cutoff: March 2024; not a verified completeness date.

Properties in Keystone

Showing page 4 of properties

13636 Highway 40

Keystone, SD 57751

13636 Twisted Oak Trail

Keystone, SD 57751

13639 Highway 40

Keystone, SD 57751

13640 Highway 40

Keystone, SD 57751

13650 Highway 40

Keystone, SD 57751

13653 Highway 40

Keystone, SD 57751

13653 Lost Cave Road

Keystone, SD 57751

13654 Pasque Flower Court

Keystone, SD 57751

13655 Highway 40

Keystone, SD 57751-6605

13655 Highway 40

Keystone, SD 57751

13656 Lost Cave Road

Keystone, SD 57751

13659 Pasque Flower Court

Keystone, SD 57751

13659 Pasque Flower Lane

Keystone, SD 57751

13660 Highway 40

Keystone, SD 57751

13660 Pasque Flower Lane

Keystone, SD 57751

13662 Lost Cave Road

Keystone, SD 57751

13662 Lost Cave Road

Keystone, SD 57751

13662 Lost Cave Road

Keystone, SD 57751

13662 Pasque Flower Court

Keystone, SD 57751

13665 Pasque Flower Lane

Keystone, SD 57751

13674 Lost Cave Road

Keystone, SD 57751

13677 Pasque Flower Lane

Keystone, SD 57751

13685 Highway 40

Keystone, SD 57751

13685 West Battle Creek Road

Keystone, SD 57751

13686 Lost Cave Road

Keystone, SD 57751

13687 Lost Cave Road

Keystone, SD 57751

13691 Harney Lookout Court

Keystone, SD 57751

13691 Highway 40

Keystone, SD 57751

13695 West Battle Creek Road

Keystone, SD 57751

13701 Hermosa Court

Keystone, SD 57751

13701 Highway 40

Keystone, SD 57751

13703 West Battle Creek Road

Keystone, SD 57751

13704 Harney Lookout Court

Keystone, SD 57751

13704 Highway 40

Keystone, SD 57751

13707 Hermosa Court

Keystone, SD 57751

1371 Madill Street

Keystone, SD 57751

13710 Highway 40

Keystone, SD 57751

13711 West Battle Creek Road

Keystone, SD 57751

13714 Hermosa Court

Keystone, SD 57751

13718 West Battle Creek Road

Keystone, SD 57751

13721 Highway 40

Keystone, SD 57751

13721 Mica Road

Keystone, SD 57751

13730 Highway 40

Keystone, SD 57751

13733 Abigail Drive

Keystone, SD 57751

13745 Borglum Road

Keystone, SD 57751

13746 Martin Ranch Trail

Keystone, SD 57751

13747 Martin Ranch Trail

Keystone, SD 57751

13752 Borglum Road

Keystone, SD 57751

13755 Martin Ranch Trail

Keystone, SD 57751

13756 Borglum Road

Keystone, SD 57751

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