ZIP codes
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Keystone, SD Demographics & ZIP Codes
Keystone, South Dakota demographics and median household income by ZIP code (in Pennington County) — 1 ZIP codes — population 996 — median income $100,714 — avg. home value $388,300. Compare income, housing, and population across ZIP codes on US5.
Population
996
Median household income (avg.)
$100,714
134% of U.S. median
Average home value
$388,300
112% of U.S. median
Average rent
$558
48% of U.S. median
Median age (avg.)
52.2
Keystone demographics
Keystone, South Dakota covers 1 ZIP code primarily in Pennington County, with a combined ZIP-area population of about 996.
Across ZIP codes with age data, the average median age is about 52.2 years.
Median household income in Keystone
The average median household income across ZIP codes in Keystone, South Dakota is about $100,714 — about 39% above the SD ZIP average ($72,498), and about 34% above the U.S. median ($75,149).
The highest median household income among listed ZIPs is about $100,714 in 57751.
Housing in Keystone
For housing in Keystone, South Dakota, the average median home value is about $388,300 and the average median rent is about $558.
The most populous ZIP in this set is 57751 (about 996 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in Keystone
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 57751 | Keystone | Pennington County | SD | 996 | $100,714 | $388,300 |
Frequently asked questions
What are the demographics of Keystone?
Keystone, South Dakota has a combined ZIP-area population of about 996 across 1 ZIP codes (primarily Pennington County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in Keystone?
The average median household income across ZIP codes in Keystone, South Dakota is about $100,714, about 39% above the state ZIP average ($72,498), and about 34% above the U.S. median ($75,149). Average median home value is about $388,300.
How many ZIP codes are in Keystone?
Keystone, South Dakota includes 1 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Keystone?
This page lists ZIP codes in Keystone, South Dakota with population, median household income, and home value. Select a ZIP for a full demographics profile.