Residential delivery area · South Dakota
ZIP Code 57440: Frankfort, SD
ZIP code 57440 uses the postal name Frankfort, South Dakota and lies entirely in Spink County (Census 2020 ZIP-county file). About 470 people live there (Census Bureau, ACS 2020-2024). Median household income is $54,625 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Frankfort (under 1%), Camrose Colony (under 1%), Glendale Colony (under 1%) and Spink Colony (under 1%); 99% is outside any Census place.
- ACS2020-24
- Census2020
- ZBP2023
- IRS2022
- Town
- Frankfort · its only residential ZIP
- County
- Spink County
- Census places
- Frankfort (under 1%); Camrose Colony (under 1%) census-designated place; Glendale Colony (under 1%) census-designated place; Spink Colony (under 1%) census-designated place
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Central
- Land area
- 141.9 sq mi · 3 people per sq mi
Where is ZIP code 57440?
57440 centers on 44.853°, -98.257° and covers 141.9 square miles of land plus 0.7 of water. It borders 5 ZIP codes: 57436, 57477, 57469, 57348, 57424.
The map draws ZIP code areas only. For the streets inside 57440, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 57440 compare with the rest of Spink County?
| Measure | 57440 | In Spink County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 466 | 5th of 15 | 218th of 375 |
| Median household income | $55k | not ranked | not ranked |
| Median home value | $133k | not ranked | not ranked |
57440's income and home value are not ranked: it has fewer than 1,000 residents (466). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 8% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 57440?
The 2020 Census counted 731 people in 57440; the ACS, which samples households over 2020-2024, estimates 466. Between the 2010 and 2020 censuses its population grew 19.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 466±101 (90% margin)
- 2020 Census count
- 731+19.4% since 2010 (612)
- Households
- 122
- Median age
- 54.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 57440?
Of the 466 people the ACS estimates in 57440, 7.1% are under 18 and 24.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (99.6%).
- Under 187.1%
- 18 to 6468.2%
- 65 and older24.7%
- White, not Hispanic99.6%
- Hispanic or Latino0.4%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
- Other or two or more0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 57440 earn?
Median household income is $54,625 (ACS 2020-2024). It is not measurably different from 2015-2019 ($65,797 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $54,625±$16,208
- Income per person
- $36,929
- Below the poverty line
- 18.5%
- Unemployed (of the labor force)
- 7.9%
- Adults 25+ with a bachelor's degree
- 26.5%
- Adjusted gross income per tax return, 2022
- $73,314220 returns; wages 31% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 57440?
- Median home value (owners' estimate)
- $132,800
- Median gross rent
- –
- Homes owned by their occupants
- 97.5%
- Housing units
- 165
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
What businesses are in 57440?
4 business establishments had a location in this ZIP code in 2023 (ZIP Code Business Patterns).
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 57440?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57436 | Doland | 440 | $73k | 8.9 mi |
| 57477 | Turton | 117 | $59k | 13.6 mi |
| 57469 | Redfield | 2,866 | $66k | 15.4 mi |
| 57348 | Hitchcock | 776 | $84k | 16.7 mi |
| 57424 | Ashton | 437 | $75k | 17.4 mi |
| 57258 | Raymond | 510 | $58k | 16.2 mi (near) |
| 57476 | Tulare | 349 | $77k | 20.3 mi (near) |
| 57322 | Carpenter | 378 | $72k | 20.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.