Frankfort, SD ZIP Codes
One ZIP code serves Frankfort, South Dakota: 57440. Together they are home to 466 residents in 122 households. That is more than the 128 people counted inside Frankfort city limits, because these ZIP codes reach past its boundary.
Frankfort city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 128 |
| Households | 61 |
| Median household income | $68,750 |
| Median home value | $67,500 |
| Median age | 54.5 |
| Median rent | not published |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 466 |
| Households (sum of ZIP codes) | 122 |
| Median household income, range across ZIP codes | $54,625 (57440) to $54,625 (57440) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $54,625 |
| Homeowners | 97.5% |
| Households with kids under 18 | 22.1% |
| Moved in the past year | 2.8% |
| Carrier routes in EDDM2GO's route library | 1 routes, 128 homes (1 of 1 ZIP codes) |
Every ZIP code in Frankfort
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 57440 | Frankfort | 466 | 122 | $54,625 | $132,800 | 97.5% | 22.1% | 2.8% | 1 | 130 | 1% of its land; mailing city |
A ZIP code is listed for Frankfort when at least 10% of its land lies inside Frankfort city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Frankfort. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Frankfort.
Counties
- Spink County — 14 ZIP codes
Price a mailing to Frankfort ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Frankfort, SD?
- 57440. A ZIP code is listed for Frankfort when at least 10% of its land lies inside Frankfort city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Frankfort.
- What is the population of Frankfort, SD?
- The Census Bureau counts 128 residents inside Frankfort city limits (ACS 2020–2024). The 1 ZIP code that serve Frankfort hold 466 residents in all.
- What is the median household income in Frankfort, SD?
- $68,750 inside Frankfort city limits, per the Census Bureau. Across its ZIP codes the medians run from $54,625 to $54,625.
- How many carrier routes and mailboxes are in Frankfort, SD?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 1 carrier routes reaching 128 residential and 2 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.