Eureka ZIP Codes — Mcpherson County, SD

There is one unique ZIP code in Eureka, South Dakota and it is 57437. Area code: 605.
1
ZIP codes
532.86
sq mi land
5.66
sq mi water
605
area code
Eureka, SD ZIP code map

About Eureka, SD

Eureka is a charming city located in South Dakota, within the heart of Mcpherson County. Known for its small-town feel, Eureka offers residents and visitors a glimpse into the rural life of the Northern Plains. With its rich agriculture and vibrant community spirit, the city has a welcoming atmosphere that draws people in.

Location & geography

Eureka covers a land area of 532.86 square miles and has an additional water area of 5.66 square miles. It is situated in a predominantly flat terrain, characteristic of the Great Plains, making it ideal for agriculture. Nearby cities include Leola, located approximately 16 miles to the south, and Bowdle, around 20 miles to the northwest.

Community & economy

The community in Eureka is tight-knit, with residents often participating in various local events and markets. Agriculture is a significant industry in the area, with many residents involved in farming and ranching. Daily life is enriched by local businesses and a commitment to community engagement, seen through events and activities throughout the year.

Transportation

Eureka is served by South Dakota Highway 10, which provides vital connections to neighboring towns and regions. The nearest major airport is Aberdeen Regional Airport, located about 50 miles to the southeast, offering commercial flights and general aviation services.

History

Founded in the late 19th century, Eureka has deep roots in agriculture, which has shaped its economy and community over the years. The town was officially established in the 1880s and saw steady growth as it became a hub for farming and ranching activities. Notable events in its history include the establishment of various local festivals that celebrate the area's agricultural heritage.

Did you know?

One surprising fact about Eureka is that it boasts a strong community spirit that shines through during the annual events, reflecting its rich agricultural background. Additionally, the local culture places a strong emphasis on outdoor activities and nature appreciation, given its expansive land and natural beauty.

ZIP codes for Eureka, SD (1)
ZIP code City County Map
57437 Eureka Mcpherson View map

Demographics & statistics

1,338
Population
59.8
Median age
$43,750
Median household income
$42,294
Per capita income
$75,200
Median home value
$521
Median monthly rent
80.9%
Home ownership
15.3%
Poverty rate
0.0%
Unemployment
709
Housing units
20.5%
Bachelor's or higher

Age distribution

Male Female
19
Under 5
23
44
5–9
54
13
10–14
16
21
15–19
26
33
20–24
41
55
25–34
68
28
35–44
34
42
45–54
51
49
55–59
61
35
60–64
44
115
65–74
142
80
75–84
99
65
85+
80
← Male
Female →

Age summary

GroupCount%
Under 1820115.0%
18 and over1,13785.0%
65 and over58143.4%
Median age59.8 years

Race & ethnicity

White 93.7%
Black or African American 3.1%
Two or more races 2.2%
Asian 0.5%
Hispanic or Latino 0.1%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
GroupCount%
White1,25593.7%
Black or African American423.1%
Two or more races302.2%
Asian70.5%
Hispanic or Latino20.1%
American Indian / Alaska Native20.1%
Native Hawaiian / Pacific Islander20.1%

Household income

Under $10k 8.2%
$10k–$15k 10.7%
$15k–$25k 13.1%
$25k–$35k 9.0%
$35k–$50k 14.1%
$50k–$75k 15.9%
$75k–$100k 8.4%
$100k–$150k 8.2%
$150k–$200k 4.0%
$200k+ 8.4%
Range% of households
Under $10k8.2%
$10k–$15k10.7%
$15k–$25k13.1%
$25k–$35k9.0%
$35k–$50k14.1%
$50k–$75k15.9%
$75k–$100k8.4%
$100k–$150k8.2%
$150k–$200k4.0%
$200k+8.4%
Median income$43,750

Housing

Home values

Under $50k 38.7%
$50k–$100k 25.7%
$100k–$150k 15.5%
$150k–$200k 5.2%
$200k–$300k 8.1%
$300k–$500k 4.6%
$500k–$1M 1.0%
$1M+ 1.2%

Housing overview

MetricValue
Median home value$75,200
Median rent / month$521
Owner occupied80.9%
Renter occupied19.1%
Vacant27.5%
Single-family detached88.3%
Large apartment buildings3.4%
Mobile homes1.3%
Median rooms6.3
Avg household size (owned)2.28

Year built

Era%
2020 or later0.0%
2010–20192.2%
2000–20093.5%
1990–19996.6%
1980–19894.0%
1970–19799.8%
1960–196918.2%
1950–195914.5%
1940–19496.8%
1939 or earlier34.4%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom11.4%
2 bedrooms26.0%
3 bedrooms41.4%
4 bedrooms13.2%
5+ bedrooms7.9%

Vehicles per household

Vehicles% of households
No vehicle4.9%
1 vehicle28.6%
2 vehicles32.2%
3 or more34.3%

Heating fuel

Fuel type%
Utility gas3.4%
Electricity24.5%
Propane / LP gas34.5%
Fuel oil32.8%
Wood2.5%
No fuel used0.3%

Households & families

Household typeCount%
Married-couple family27145.4%
Cohabiting couple213.5%
Male householder, no spouse15325.6%
Female householder, no spouse15225.5%
Households with children under 189616.1%
Households with seniors (65+)31753.1%
Average household size2.07

Marital status

StatusMaleFemale
Never married29.2%16.4%
Married55.5%48.2%
Separated0.0%1.0%
Widowed4.7%24.6%
Divorced10.6%9.8%

Education

Less than 9th grade 12.7%
Some HS, no diploma 5.7%
HS graduate 40.2%
Some college, no degree 11.2%
Associate's degree 9.7%
Bachelor's degree 16.1%
Graduate / professional 4.4%
Metric%
HS diploma or higher81.6%
Bachelor's or higher20.5%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool147.3%
Kindergarten6634.4%
Elementary school6131.8%
High school3216.7%
College / grad school199.9%

Employment

Industry of employment

Education & healthcare 34.0%
Agriculture & mining 24.9%
Retail trade 9.9%
Construction 9.1%
Professional & management 4.9%
Public administration 4.2%
Wholesale trade 3.5%
Finance & real estate 2.9%
Arts, food & hospitality 2.6%
Manufacturing 2.0%
Transportation & utilities 1.1%
Other services 0.5%
Information 0.4%

Occupation

Category%
Management, business & arts43.3%
Service19.4%
Sales & office14.4%
Natural resources & construction15.9%
Production & transportation6.9%

Employment type

Type%
Private sector63.1%
Government18.1%
Self-employed18.8%
Unpaid family workers0.0%

Commute

Method%
Drive alone81.1%
Carpool3.5%
Public transit0.0%
Walk6.4%
Other means0.7%
Avg commute (minutes)16.1

Poverty

All people 15.3%
Under 18 years 14.4%
18 and over 15.5%
Married-couple families 8.9%
Female-led households 19.4%

Income support

Source% of households
Social Security50.8%
Retirement income12.7%
Supplemental Security2.7%
Cash public assistance2.2%
Food stamps / SNAP4.4%

Health indicators

Condition%
High blood pressure43.4%
High cholesterol39.0%
Heart disease12.2%
Stroke5.5%
Asthma8.7%
Arthritis36.0%
Kidney disease4.8%
Pulmonary disease9.6%
Cancer11.9%
Behavior / access%
Binge drinking13.2%
No physical activity30.4%
Less than 7 hrs sleep26.0%
Fair or poor health16.2%
Poor mental health9.0%
Poor physical health11.9%
No health insurance12.2%
Visited doctor (checkup)81.5%
Visited dentist67.0%
Cholesterol screening93.4%
Teeth loss18.1%

Veterans & disability

VeteransCount%
Civilian veterans11810.4%
Disability%
Any disability16.3%
Under 181.5%
18–64 years11.0%
65 and over28.7%

Health insurance coverage

Type%
Private insurance61.4%
Public insurance44.8%
Uninsured under 1912.9%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only1,29696.9%
Spanish433.3%
Other Indo-European00.0%
Asian & Pacific Islander433.3%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)1,31598.3%
Born in same state1,31598.3%
Born in different state96271.9%
Foreign born00.0%
Naturalized citizen231.7%
Not a US citizen730.4%

Ancestry

AncestryCount%
Italian1067.9%
Polish997.4%
Arab544%
French513.8%
AncestryCount%
Dutch181.3%
English60.4%
German50.4%

Technology access

Metric% of households
Computer access44.6%
Internet access77.7%

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

Frequently asked questions
What ZIP codes does Eureka, SD have?
Eureka, SD has one ZIP code: 57437. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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