Zip code 57440: Frankfort, South Dakota

Q: What city is zip code 57440?

57440 is assigned to Frankfort, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 57440 in?

57440 is in Spink County, South Dakota.

Q: What is the population of 57440?

About 466 people live in 57440, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 57440?

The median household income in 57440 is $54,625.

Q: What zip codes are near 57440?

The closest zip codes to 57440 are 57436, 57477, 57469, 57258, 57348.

Residential delivery areaSpink CountyCentral Time

Population

466

Small sample: rough estimates

Median household income

$55K

U.S. $81K

Median home value

$133K

U.S. $333K

Median rent

—

U.S. $1,413

Median age

54.5

U.S. 38.9

Land area

142 sq mi

3 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 57440

57440 is a rural zip code in Frankfort, South Dakota (Spink County), covering 142 sq mi of land. About 466 people live here, or 3 per square mile. The median resident is 54.5 years old, compared with 38.9 nationally. With so few residents, the Census figures below are rough estimates with wide margins of error.

The median household earns $54,625 a year, 32% below the national median of $80,734. 18.5% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $132,800, or 2.4 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 98% of occupied homes are lived in by their owners.

27% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 23.5 minutes each way, and 28% of workers work from home. The most common jobs among working residents are in management; production and manufacturing; and office and administrative support. 36% of them are self-employed (U.S.: 10%).

How 57440 compares

Sorted from highest to lowest national percentile

Only about 466 people live here, so these survey estimates have wide margins of error.

Homeownership rate97.5%
99th
StrengthU.S. 65.2% · SD 68.6%16th of 344 in SD
Self-employed workers35.7%
99th
U.S. 10% · SD 12.1%50th of 347 in SD
Median age54.5
98th
U.S. 38.9 · SD 3847th of 347 in SD
Veterans15.5%
98th
U.S. 6.2% · SD 7.9%19th of 347 in SD
Housing vacancy26.1%
97th
U.S. 10.1% · SD 10.5%67th of 344 in SD
Income inequality (Gini)0.550
97th
WeaknessU.S. 0.483 · SD 0.44913th of 343 in SD
Work from home28.1%
92nd
U.S. 15.1% · SD 9.7%37th of 347 in SD
Residents 65 and older24.7%
91st
U.S. 17.2% · SD 18%108th of 347 in SD
Unemployment rate7.9%
86th
WeaknessU.S. 5.2% · SD 2.9%38th of 347 in SD
Poverty rate18.5%
81st
WeaknessU.S. 12.5% · SD 11.9%66th of 344 in SD
Uninsured rate9.9%
70th
U.S. 8.4% · SD 9%116th of 347 in SD
Broadband access91.8%
47th
U.S. 91% · SD 89.6%100th of 344 in SD
Per capita income$36,929
40th
U.S. $44,673 · SD $40,550203rd of 347 in SD
Bachelor's degree or higher26.5%
38th
U.S. 35.7% · SD 31.9%144th of 346 in SD
Average commute23.5 min
33rd
U.S. 26.4 min · SD 17.8 min98th of 330 in SD
Government workers11.3%
29th
U.S. 14.5% · SD 15.8%235th of 347 in SD
Median earnings per worker$37,898
16th
WeaknessU.S. $49,666 · SD $46,539279th of 345 in SD
Median household income$54,625
14th
WeaknessU.S. $80,734 · SD $75,081286th of 327 in SD
Median home value$132,800
7th
U.S. $332,700 · SD $257,400215th of 302 in SD
Foreign-born residents0.6%
3rd
U.S. 14.1% · SD 4%186th of 347 in SD
Population466
1st
U.S. 334,922,499 · SD 907,428218th of 347 in SD
Population density3/sq mi
1st
U.S. 95/sq mi · SD 12/sq mi225th of 347 in SD
Diversity index0.9
1st
U.S. 61.4 · SD 35.4315th of 347 in SD
Rent-burdened renters0%
1st
StrengthU.S. 51.1% · SD 39.8%307th of 313 in SD
Residents under 187.1%
1st
U.S. 22% · SD 24.2%331st of 347 in SD
Tech workers0%
1st
U.S. 3.8% · SD 2.3%327th of 347 in SD
Healthcare workers3.2%
1st
U.S. 9.7% · SD 10.5%261st of 347 in SD

Measure	57440	Spink	SD	U.S.	National percentile	Rank in SD
Homeownership rateStrength	97.5%	72.7%	68.6%	65.2%	99th	16th of 344
Self-employed workers	35.7%	23.9%	12.1%	10%	99th	50th of 347
Median age	54.5	45.5	38	38.9	98th	47th of 347
Veterans	15.5%	7.8%	7.9%	6.2%	98th	19th of 347
Housing vacancy	26.1%	17.4%	10.5%	10.1%	97th	67th of 344
Income inequality (Gini)Weakness	0.550	0.422	0.449	0.483	97th	13th of 343
Work from home	28.1%	14.7%	9.7%	15.1%	92nd	37th of 347
Residents 65 and older	24.7%	24.5%	18%	17.2%	91st	108th of 347
Unemployment rateWeakness	7.9%	1.3%	2.9%	5.2%	86th	38th of 347
Poverty rateWeakness	18.5%	10.1%	11.9%	12.5%	81st	66th of 344
Uninsured rate	9.9%	9.4%	9%	8.4%	70th	116th of 347
Broadband access	91.8%	88.3%	89.6%	91%	47th	100th of 344
Per capita income	$36,929	$38,078	$40,550	$44,673	40th	203rd of 347
Bachelor's degree or higher	26.5%	28.2%	31.9%	35.7%	38th	144th of 346
Average commute	23.5 min	17.1 min	17.8 min	26.4 min	33rd	98th of 330
Government workers	11.3%	18.5%	15.8%	14.5%	29th	235th of 347
Median earnings per workerWeakness	$37,898	$44,360	$46,539	$49,666	16th	279th of 345
Median household incomeWeakness	$54,625	$70,139	$75,081	$80,734	14th	286th of 327
Median home value	$132,800	$123,300	$257,400	$332,700	7th	215th of 302
Foreign-born residents	0.6%	1.1%	4%	14.1%	3rd	186th of 347
Population	466	6,219	907,428	334,922,499	1st	218th of 347
Population density	3/sq mi	4/sq mi	12/sq mi	95/sq mi	1st	225th of 347
Diversity index	0.9	14.1	35.4	61.4	1st	315th of 347
Rent-burdened rentersStrength	0%	25.4%	39.8%	51.1%	1st	307th of 313
Residents under 18	7.1%	21.1%	24.2%	22%	1st	331st of 347
Tech workers	0%	0.9%	2.3%	3.8%	1st	327th of 347
Healthcare workers	3.2%	10.3%	10.5%	9.7%	1st	261st of 347

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

5–17

14%

18–24

25–34

17%

35–44

10%

45–54

25%

55–64

16%

65–74

75+

Median age

54.5

Under 18

7.1%

65 and over

24.7%

Race and ethnicity

White100%
Black0%
Hispanic0.4%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0%

Diversity index

0.9

U.S. 61.4

Foreign-born

0.6%

U.S. 14.1%

Born in state

70%

Language spoken at home (households)

English only

93%

Spanish

0.8%

Other Indo-European

Asian / Pacific

Other

Households

Households: 122
Average household size: 3.1
Family households: 73%
Married couples: 52.5%
Living alone: 27%
Veterans (of adults): 15.5%
Male / female: 53% / 47%

Income and poverty

Household income distribution

<$25k

14%

$25–50k

17%

$50–75k

30%

$75–100k

$100–150k

20%

$150–200k

0.8%

$200k+

11%

Median household income

57440

$54,625

Spink Co.

$70,139

South Dakota

$75,081

United States

$80,734

Per capita income

$36,929

U.S. $44,673

Poverty rate

18.5%

U.S. 12.5%

Households earning $150K+

12.3%

U.S. 23%

Income inequality (Gini)

0.550

U.S. 0.483

Housing

Median home value

57440

$132,800

Spink Co.

$123,300

South Dakota

$257,400

United States

$332,700

Median gross rent

57440

—

Spink Co.

$734

South Dakota

$946

United States

$1,413

Types of housing

Single-family

81%

2–4 units

5–19 units

20+ units

Mobile home

10%

Boat, RV, van

Housing units: 165
Owner-occupied: 97.5%
Vacant: 26.1%
Median year built: 1946
Median rooms: 7.6
Renters paying 30%+ of income: 0%
Renters paying 50%+ of income: 0%
Home value to income: 2.4× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

44%

Carpooled

Transit

Walked

26%

Bicycle

Worked from home

28%

Other

Commute time (one way)

<10 min

10–19

47%

20–29

30–44

33%

45–59

60+

Average commute

23.5 min

U.S. 26.4 min

Unemployment

7.9%

U.S. 5.2%

In labor force

54.7%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

29%

Production

20%

Office and admin

13%

Construction and repair

12%

Sales

Education

Healthcare

Transportation and moving

Legal and social services

Food service

Cleaning and personal care

Farming, fishing and forestry

Engineering and science

0.9%

Business and finance

0.5%

Computer and math

Arts, media and sports

Police and fire

Industries

Agriculture and mining

30%

Manufacturing

11%

Construction

11%

Finance, insurance and real estate

10%

Other services

10%

Education

Health care and social assistance

Retail

Wholesale

Professional and technical services

Transportation, warehousing and utilities

Restaurants and hotels

0.9%

Public administration

0.9%

Admin, support and management

Information

Arts and recreation

Median earnings per worker

$37,898

U.S. $49,666

Self-employed

35.7%

U.S. 10%

Government workers

11.3%

U.S. 14.5%

Nonprofit workers

11.3%

U.S. 8.8%

Median earnings by type of work

Type of work	57440	U.S.
Management, business, science and arts	$58,958	$74,888
Service	under $2,500	$26,804
Sales and office	$38,068	$40,476
Construction and maintenance	$26,500	$49,199
Production and transportation	$52,188	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

17%

High school

23%

Some college

27%

Associate's

Bachelor's

10%

Graduate

16%

High school graduate or higher: 83.1%
Bachelor's degree or higher: 26.5%
Graduate or professional degree: 16.1%
Households with broadband: 91.8%
Cable, fiber or DSL: 71.3%
No internet access: 6.6%
Without health insurance: 9.9%
Limited-English households: 1.6%

Geography

City (USPS): Frankfort
State: South Dakota
County: Spink County
Center point: 44.8534° N, 98.2567° W
Land area: 142 sq mi
Water area: 0.7 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Zip codes near 57440

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
57436	Doland, SD	8.9 mi	440	$73,333	$69,500
57477	Turton, SD	14 mi	117	$59,375	$53,000
57469	Redfield, SD	15 mi	2,866	$66,111	$152,900
57258	Raymond, SD	16 mi	510	$58,295	—
57348	Hitchcock, SD	17 mi	776	$83,542	$209,500
57424	Ashton, SD	17 mi	437	$75,000	—
57476	Tulare, SD	20 mi	349	$76,750	$151,800
57322	Carpenter, SD	21 mi	378	$71,667	$247,500
57429	Brentford, SD	21 mi	92	—	—
57461	Mellette, SD	23 mi	299	$105,536	$200,700
57434	Conde, SD	24 mi	506	$73,393	—
57225	Clark, SD	26 mi	1,833	$66,875	$155,100

Questions about 57440

What city is zip code 57440?

57440 is assigned to Frankfort, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 57440 in?

57440 is in Spink County, South Dakota.

What is the population of 57440?

About 466 people live in 57440, according to the Census Bureau's American Community Survey.

What time zone is 57440 in?

57440 is in Central Time.

What is the median household income in 57440?

The median household income in 57440 is $54,625.

What zip codes are near 57440?

The closest zip codes to 57440 are 57436, 57477, 57469, 57258, 57348.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 57440, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.