South Dakota · Spink
57440 ZIP Code
57440 is associated with Frankfort, South Dakota. The page shows the county, timezone, nearby ZIPs and links to the state hub for a nearby city generator.
ZIP details
- ZIP code
- 57440
- City
- Frankfort
- State
- South Dakota (SD)
- County
- Spink
- Timezone
- America/Chicago
- State sales tax
- Varies by state
Questions about 57440
- 57440 is associated with Frankfort, South Dakota in the bundled dataset. ZIP areas can cross city and county lines, so use the city and county fields together.
- Spink. County boundaries and postal areas are not the same thing; a ZIP can serve addresses in more than one county.
- America/Chicago. This is the IANA timezone name for the city associated with the ZIP.
- It appears in the public city dataset bundled with this site. That confirms the format and city association, not that a specific street, mailbox, or resident exists.