Keystone, SD ZIP Codes
One ZIP code serves Keystone, South Dakota: 57751. Together they are home to 893 residents in 327 households. That is more than the 336 people counted inside Keystone town limits, because these ZIP codes reach past its boundary.
Keystone town limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 336 |
| Households | 107 |
| Median household income | $64,702 |
| Median home value | $263,900 |
| Median age | 38.1 |
| Median rent | $546 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 893 |
| Households (sum of ZIP codes) | 327 |
| Median household income, range across ZIP codes | $97,969 (57751) to $97,969 (57751) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $97,969 |
| Homeowners | 85.6% |
| Households with kids under 18 | 36.1% |
| Moved in the past year | 7.6% |
| Carrier routes in EDDM2GO's route library | not loaded yet |
Every ZIP code in Keystone
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 57751 | Keystone | 893 | 327 | $97,969 | $473,500 | 85.6% | 36.1% | 7.6% | — | — | 7% of its land; mailing city |
A ZIP code is listed for Keystone when at least 10% of its land lies inside Keystone town limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Keystone. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Keystone.
Counties
- Pennington County — 15 ZIP codes
Price a mailing to Keystone ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Keystone, SD?
- 57751. A ZIP code is listed for Keystone when at least 10% of its land lies inside Keystone town limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Keystone.
- What is the population of Keystone, SD?
- The Census Bureau counts 336 residents inside Keystone town limits (ACS 2020–2024). The 1 ZIP code that serve Keystone hold 893 residents in all.
- What is the median household income in Keystone, SD?
- $64,702 inside Keystone town limits, per the Census Bureau. Across its ZIP codes the medians run from $97,969 to $97,969.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.