Westport ZIP Codes — Brown County, SD

There is one unique ZIP code in Westport, South Dakota and it is 57481. Area code: 605.
1
ZIP codes
188.49
sq mi land
0.30
sq mi water
605
area code
Westport, SD ZIP code map

About Westport, SD

Westport, South Dakota, is a small yet vibrant community nestled in the heart of Brown County. It is known for its rural charm and welcoming atmosphere, making it an integral part of the fabric of South Dakota. With its rich agricultural heritage, Westport embodies the spirit of small-town America.

Location & geography

Westport is situated in northeastern South Dakota, surrounded by stunning natural landscapes. The nearest cities include Aberdeen, located approximately 23 miles to the southwest, and Groton, about 18 miles to the south. The town covers a land area of 188.49 square miles, with a water area of 0.30 square miles, offering a mix of farmland and open spaces.

Community & economy

The character of Westport is defined by its tight-knit community, where residents take pride in their local culture and traditions. The economy primarily revolves around agriculture, with local farms contributing to the overall industry and livelihood of the area. Daily life in Westport reflects a slower pace, emphasizing neighborly connections and community events that strengthen bonds among residents.

Transportation

Westport is conveniently accessed via South Dakota Highway 12, providing connections to nearby towns and cities. The nearest major airport is Aberdeen Regional Airport, located about 25 miles southwest of Westport, which serves regional flights. Public transit options are limited, emphasizing local customs of vehicle use for commuting.

History

Founded in the late 19th century, Westport emerged as a key agricultural hub in Brown County. Its development was supported by the expansion of farming, which became a backbone of the local economy. Over the years, the town has experienced various historical events that have shaped its identity, including community gatherings and festivals that celebrate its heritage.

Did you know?

A surprising fact about Westport is its significant land area, which makes it one of the larger communities in terms of space in its region. Despite its size, Westport maintains a small population, leading to a unique blend of wide-open spaces and close community ties.

ZIP codes for Westport, SD (1)
ZIP code City County Map
57481 Westport Brown View map

Demographics & statistics

375
Population
41.3
Median age
$71,250
Median household income
$38,793
Per capita income
$162,500
Median home value
$0
Median monthly rent
96.0%
Home ownership
4.3%
Poverty rate
0.0%
Unemployment
172
Housing units
22.5%
Bachelor's or higher

Age distribution

Male Female
26
Under 5
25
13
5–9
13
6
10–14
6
6
20–24
5
25
25–34
23
26
35–44
24
19
45–54
18
13
55–59
12
21
60–64
20
12
65–74
11
15
75–84
14
11
85+
11
← Male
Female →

Age summary

GroupCount%
Under 188923.7%
18 and over28676.3%
65 and over7419.7%
Median age41.3 years

Race & ethnicity

White 95.8%
Two or more races 2.7%
Hispanic or Latino 0.5%
American Indian / Alaska Native 0.5%
Other race 0.5%
GroupCount%
White36195.8%
Two or more races102.7%
Hispanic or Latino20.5%
American Indian / Alaska Native20.5%
Other race20.5%

Household income

Under $10k 1.3%
$10k–$15k 3.3%
$15k–$25k 7.3%
$25k–$35k 2.7%
$35k–$50k 12.0%
$50k–$75k 32.0%
$75k–$100k 2.0%
$100k–$150k 12.7%
$150k–$200k 20.0%
$200k+ 6.7%
Range% of households
Under $10k1.3%
$10k–$15k3.3%
$15k–$25k7.3%
$25k–$35k2.7%
$35k–$50k12.0%
$50k–$75k32.0%
$75k–$100k2.0%
$100k–$150k12.7%
$150k–$200k20.0%
$200k+6.7%
Median income$71,250

Housing

Home values

Under $50k 6.9%
$50k–$100k 18.8%
$100k–$150k 19.4%
$150k–$200k 13.9%
$200k–$300k 13.2%
$300k–$500k 20.1%
$500k–$1M 6.3%
$1M+ 1.4%

Housing overview

MetricValue
Median home value$162,500
Median rent / month$0
Owner occupied96.0%
Renter occupied4.0%
Vacant15.7%
Single-family detached87.1%
Large apartment buildings0.0%
Mobile homes5.6%
Median rooms7.1
Avg household size (owned)2.44

Year built

Era%
2020 or later0.0%
2010–20193.4%
2000–20098.4%
1990–199910.1%
1980–198911.8%
1970–197919.7%
1960–19696.2%
1950–19596.7%
1940–19496.7%
1939 or earlier27.0%

Bedrooms

Size% of units
No bedroom (studio)1.1%
1 bedroom0.6%
2 bedrooms14.0%
3 bedrooms41.6%
4 bedrooms25.3%
5+ bedrooms17.4%

Vehicles per household

Vehicles% of households
No vehicle2.7%
1 vehicle12.7%
2 vehicles40.0%
3 or more44.7%

Heating fuel

Fuel type%
Electricity32.0%
Propane / LP gas62.0%
No fuel used6.0%

Households & families

Household typeCount%
Married-couple family9362.0%
Cohabiting couple42.7%
Male householder, no spouse3020.0%
Female householder, no spouse2315.3%
Households with children under 184429.3%
Households with seniors (65+)5637.3%
Average household size2.50

Marital status

StatusMaleFemale
Never married18.1%5.3%
Married59.4%72.5%
Separated0.0%0.0%
Widowed17.4%15.3%
Divorced5.2%6.9%

Education

Less than 9th grade 4.4%
Some HS, no diploma 3.3%
HS graduate 35.3%
Some college, no degree 25.5%
Associate's degree 9.1%
Bachelor's degree 12.7%
Graduate / professional 9.8%
Metric%
HS diploma or higher92.4%
Bachelor's or higher22.5%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool00.0%
Kindergarten00.0%
Elementary school3376.7%
High school00.0%
College / grad school1023.3%

Employment

Industry of employment

Agriculture & mining 27.0%
Professional & management 15.2%
Education & healthcare 12.9%
Finance & real estate 10.7%
Public administration 9.0%
Construction 6.2%
Retail trade 5.1%
Arts, food & hospitality 5.1%
Manufacturing 3.9%
Other services 2.8%
Transportation & utilities 2.2%

Occupation

Category%
Management, business & arts45.5%
Service10.1%
Sales & office13.5%
Natural resources & construction27.0%
Production & transportation3.9%

Employment type

Type%
Private sector74.2%
Government9.0%
Self-employed11.2%
Unpaid family workers5.6%

Commute

Method%
Drive alone78.2%
Carpool13.8%
Public transit0.0%
Walk6.9%
Other means0.0%
Avg commute (minutes)22.0

Poverty

All people 4.3%
Under 18 years 0.0%
18 and over 5.6%
Married-couple families 4.3%
Female-led households 0.0%

Income support

Source% of households
Social Security34.0%
Retirement income10.0%
Supplemental Security3.3%
Cash public assistance0.0%
Food stamps / SNAP2.7%

Health indicators

Condition%
High blood pressure30.7%
High cholesterol30.8%
Heart disease6.0%
Stroke2.7%
Asthma8.4%
Arthritis23.2%
Kidney disease2.6%
Pulmonary disease5.4%
Cancer6.5%
Behavior / access%
Binge drinking21.2%
No physical activity22.8%
Less than 7 hrs sleep29.4%
Fair or poor health10.4%
Poor mental health10.6%
Poor physical health8.3%
No health insurance11.7%
Visited doctor (checkup)74.2%
Visited dentist68.9%
Cholesterol screening88.8%
Teeth loss13.3%

Veterans & disability

VeteransCount%
Civilian veterans4214.7%
Disability%
Any disability11.5%
Under 180.0%
18–64 years0.9%
65 and over55.4%

Health insurance coverage

Type%
Private insurance92.0%
Public insurance21.6%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only32486.4%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)375100.0%
Born in same state375100.0%
Born in different state27874.1%
Foreign born00.0%
Naturalized citizen00.0%
Not a US citizen00.0%

Ancestry

AncestryCount%
Polish5113.6%
French338.8%
AncestryCount%
Arab318.3%
Italian82.1%

Technology access

Metric% of households
Computer access40.0%
Internet access92.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions
What ZIP codes does Westport, SD have?
Westport, SD has one ZIP code: 57481. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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