Zip code 57481: Westport, South Dakota

Q: What city is zip code 57481?

57481 is assigned to Westport, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 57481 in?

57481 is mostly in Brown County, but it extends into 2 other counties.

Q: What is the population of 57481?

About 271 people live in 57481, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 57481?

The median household income in 57481 is $68,125.

Q: What zip codes are near 57481?

The closest zip codes to 57481 are 57426, 57441, 57401, 57456, 57402.

Residential delivery areaBrown CountyCentral Time

Population

271

Small sample: rough estimates

Median household income

$68K

U.S. $81K

Median home value

$216K

U.S. $333K

Median rent

—

U.S. $1,413

Median age

54.2

U.S. 38.9

Land area

188 sq mi

1 people/sq mi

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

About 57481

57481 is a rural zip code in Westport, South Dakota (Brown County), covering 188 sq mi of land. About 271 people live here, or 1 per square mile. The median resident is 54.2 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 $68,125 a year, 16% below the national median of $80,734. 4.8% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $215,600, or 3.2 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 95% of occupied homes are lived in by their owners.

12% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 20.5 minutes each way, and 6% of workers work from home. The most common jobs among working residents are in construction and repair; management; and sales. 17% of them are self-employed (U.S.: 10%).

How 57481 compares

Sorted from highest to lowest national percentile

Only about 271 people live here, so these survey estimates have wide margins of error.

Homeownership rate95%
99th
StrengthU.S. 65.2% · SD 68.6%29th of 344 in SD
Veterans21.9%
99th
U.S. 6.2% · SD 7.9%7th of 347 in SD
Median age54.2
98th
U.S. 38.9 · SD 3850th of 347 in SD
Self-employed workers16.7%
94th
U.S. 10% · SD 12.1%184th of 347 in SD
Housing vacancy18.8%
92nd
U.S. 10.1% · SD 10.5%127th of 344 in SD
Residents 65 and older24%
90th
U.S. 17.2% · SD 18%115th of 347 in SD
Median earnings per worker$48,750
52nd
U.S. $49,666 · SD $46,539114th of 345 in SD
Per capita income$37,896
44th
U.S. $44,673 · SD $40,550185th of 347 in SD
Residents under 1820.7%
37th
U.S. 22% · SD 24.2%241st of 347 in SD
Median household income$68,125
33rd
U.S. $80,734 · SD $75,081209th of 327 in SD
Median home value$215,600
24th
U.S. $332,700 · SD $257,400106th of 302 in SD
Income inequality (Gini)0.404
24th
U.S. 0.483 · SD 0.449188th of 343 in SD
Government workers10.5%
23rd
U.S. 14.5% · SD 15.8%250th of 347 in SD
Broadband access86.8%
18th
WeaknessU.S. 91% · SD 89.6%197th of 344 in SD
Average commute20.5 min
15th
StrengthU.S. 26.4 min · SD 17.8 min158th of 330 in SD
Work from home6.1%
12th
U.S. 15.1% · SD 9.7%252nd of 347 in SD
Uninsured rate3%
12th
StrengthU.S. 8.4% · SD 9%280th of 347 in SD
Poverty rate4.8%
11th
StrengthU.S. 12.5% · SD 11.9%261st of 344 in SD
Diversity index12.6
6th
U.S. 61.4 · SD 35.4209th of 347 in SD
Bachelor's degree or higher12.4%
5th
WeaknessU.S. 35.7% · SD 31.9%307th of 346 in SD
Foreign-born residents0.4%
2nd
U.S. 14.1% · SD 4%200th of 347 in SD
Population271
1st
U.S. 334,922,499 · SD 907,428275th of 347 in SD
Population density1/sq mi
1st
U.S. 95/sq mi · SD 12/sq mi297th of 347 in SD
Unemployment rate0%
1st
StrengthU.S. 5.2% · SD 2.9%241st of 347 in SD
Tech workers0%
1st
U.S. 3.8% · SD 2.3%193rd of 347 in SD
Healthcare workers1.8%
1st
U.S. 9.7% · SD 10.5%286th of 347 in SD

Measure	57481	Brown	SD	U.S.	National percentile	Rank in SD
Homeownership rateStrength	95%	67.6%	68.6%	65.2%	99th	29th of 344
Veterans	21.9%	6.6%	7.9%	6.2%	99th	7th of 347
Median age	54.2	37.8	38	38.9	98th	50th of 347
Self-employed workers	16.7%	10.2%	12.1%	10%	94th	184th of 347
Housing vacancy	18.8%	10%	10.5%	10.1%	92nd	127th of 344
Residents 65 and older	24%	17.8%	18%	17.2%	90th	115th of 347
Median earnings per worker	$48,750	$45,396	$46,539	$49,666	52nd	114th of 345
Per capita income	$37,896	$40,863	$40,550	$44,673	44th	185th of 347
Residents under 18	20.7%	23.6%	24.2%	22%	37th	241st of 347
Median household income	$68,125	$70,898	$75,081	$80,734	33rd	209th of 327
Median home value	$215,600	$221,100	$257,400	$332,700	24th	106th of 302
Income inequality (Gini)	0.404	0.459	0.449	0.483	24th	188th of 343
Government workers	10.5%	16.8%	15.8%	14.5%	23rd	250th of 347
Broadband accessWeakness	86.8%	87.5%	89.6%	91%	18th	197th of 344
Average commuteStrength	20.5 min	13.9 min	17.8 min	26.4 min	15th	158th of 330
Work from home	6.1%	6.3%	9.7%	15.1%	12th	252nd of 347
Uninsured rateStrength	3%	5.7%	9%	8.4%	12th	280th of 347
Poverty rateStrength	4.8%	11.7%	11.9%	12.5%	11th	261st of 344
Diversity index	12.6	27.7	35.4	61.4	6th	209th of 347
Bachelor's degree or higherWeakness	12.4%	33.8%	31.9%	35.7%	5th	307th of 346
Foreign-born residents	0.4%	4.3%	4%	14.1%	2nd	200th of 347
Population	271	37,877	907,428	334,922,499	1st	275th of 347
Population density	1/sq mi	22/sq mi	12/sq mi	95/sq mi	1st	297th of 347
Unemployment rateStrength	0%	3.3%	2.9%	5.2%	1st	241st of 347
Tech workers	0%	0.9%	2.3%	3.8%	1st	193rd of 347
Healthcare workers	1.8%	10.8%	10.5%	9.7%	1st	286th 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

13%

5–17

18–24

25–34

15%

35–44

15%

45–54

21%

55–64

13%

65–74

11%

75+

Median age

54.2

Under 18

20.7%

65 and over

24%

Race and ethnicity

White93%
Black0%
Hispanic0%
Asian0.4%
Native American0.4%
Pacific Islander0%
Other0.7%
Multiracial5%

Diversity index

12.6

U.S. 61.4

Foreign-born

0.4%

U.S. 14.1%

Born in state

67.2%

Language spoken at home (households)

English only

93%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 121
Average household size: 2.2
Family households: 61.2%
Married couples: 54.5%
Living alone: 36.4%
Veterans (of adults): 21.9%
Male / female: 61% / 39%

Income and poverty

Household income distribution

<$25k

20%

$25–50k

$50–75k

28%

$75–100k

18%

$100–150k

10%

$150–200k

12%

$200k+

Median household income

57481

$68,125

Brown Co.

$70,898

South Dakota

$75,081

United States

$80,734

Per capita income

$37,896

U.S. $44,673

Poverty rate

4.8%

U.S. 12.5%

Households earning $150K+

19.8%

U.S. 23%

Income inequality (Gini)

0.404

U.S. 0.483

Housing

Median home value

57481

$215,600

Brown Co.

$221,100

South Dakota

$257,400

United States

$332,700

Median gross rent

57481

—

Brown Co.

$777

South Dakota

$946

United States

$1,413

Types of housing

Single-family

92%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 149
Owner-occupied: 95%
Vacant: 18.8%
Median year built: 1975
Median rooms: 6.8
Renters paying 30%+ of income: —
Renters paying 50%+ of income: —
Home value to income: 3.2× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

74%

Carpooled

16%

Transit

Walked

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

16%

10–19

20–29

53%

30–44

21%

45–59

60+

Average commute

20.5 min

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

50.2%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Construction and repair

33%

Management

20%

Sales

11%

Office and admin

Food service

Production

Cleaning and personal care

Legal and social services

Business and finance

Healthcare

Farming, fishing and forestry

Computer and math

Engineering and science

Education

Arts, media and sports

Police and fire

Transportation and moving

Industries

Agriculture and mining

30%

Finance, insurance and real estate

18%

Retail

12%

Public administration

11%

Construction

Professional and technical services

Health care and social assistance

Arts and recreation

Admin, support and management

Manufacturing

Restaurants and hotels

Transportation, warehousing and utilities

Other services

0.9%

Education

Wholesale

Information

Median earnings per worker

$48,750

U.S. $49,666

Self-employed

16.7%

U.S. 10%

Government workers

10.5%

U.S. 14.5%

Nonprofit workers

3.5%

U.S. 8.8%

Median earnings by type of work

Type of work	57481	U.S.
Management, business, science and arts	$63,125	$74,888
Service	$19,750	$26,804
Sales and office	$51,250	$40,476
Construction and maintenance	$57,500	$49,199
Production and transportation	$38,125	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

42%

Some college

30%

Associate's

Bachelor's

12%

Graduate

0.5%

High school graduate or higher: 91.4%
Bachelor's degree or higher: 12.4%
Graduate or professional degree: 0.5%
Households with broadband: 86.8%
Cable, fiber or DSL: 66.9%
No internet access: 11.6%
Without health insurance: 3%
Limited-English households: 0%

Geography

City (USPS): Westport
State: South Dakota
County: Brown County
Center point: 45.6626° N, 98.6830° W
Land area: 188 sq mi
Water area: 0.3 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

57481 spans 3 counties

Brown County56% of land
McPherson County31% of land
Edmunds County12% of land

Zip codes near 57481

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
57426	Barnard, SD	10 mi	42	$78,875	—
57441	Frederick, SD	14 mi	670	$108,009	$152,100
57401	Aberdeen, SD	14 mi	31,939	$68,835	$226,200
57456	Leola, SD	16 mi	670	$75,833	$75,400
57402	Aberdeen, SD · PO box	17 mi	—	—	—
57433	Columbia, SD	18 mi	318	$50,417	—
57451	Ipswich, SD	20 mi	2,485	$86,000	$195,700
57427	Bath, SD	22 mi	384	$83,977	$363,700
58439	Forbes, ND	22 mi	385	$73,611	—
57449	Houghton, SD	25 mi	357	$150,000	—
57460	Mansfield, SD	27 mi	257	$139,500	$233,900
57457	Long Lake, SD	27 mi	108	$140,417	—

Questions about 57481

What city is zip code 57481?

57481 is assigned to Westport, South Dakota. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 57481 in?

57481 is mostly in Brown County, but it extends into 2 other counties.

What is the population of 57481?

About 271 people live in 57481, according to the Census Bureau's American Community Survey.

What time zone is 57481 in?

57481 is in Central Time.

What is the median household income in 57481?

The median household income in 57481 is $68,125.

What zip codes are near 57481?

The closest zip codes to 57481 are 57426, 57441, 57401, 57456, 57402.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 57481, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.