Kennebec ZIP Codes — Lyman County, SD

There is one unique ZIP code in Kennebec, South Dakota and it is 57544. Area code: 605.

ZIP codes

252.04

sq mi land

2.20

sq mi water

605

area code

Kennebec, SD ZIP code map

About Kennebec, SD

Kennebec is a small town located in the south-central part of South Dakota. Nestled within Lyman County, it offers a quiet, rural lifestyle with a strong sense of community. The town, served by the ZIP code 57544, is known for its friendly residents and picturesque landscapes.

Location & geography

Kennebec lies approximately 23 miles south of the city of Murdo and about 48 miles northwest of the larger city of Winner. The terrain features vast stretches of prairie, offering beautiful scenery and outdoor recreational opportunities. Covering a total area of 254.24 square miles, Kennebec includes 252.04 square miles of land and 2.20 square miles of water.

Community & economy

The community of Kennebec is characterized by its close-knit atmosphere, where residents often come together for local events and activities. Agriculture plays a significant role in its economy, along with small businesses that cater to the needs of the local population. Daily life in Kennebec revolves around family-oriented values, outdoor activities, and maintaining the town’s traditions.

Transportation

Kennebec is accessible via South Dakota Highway 273, which connects the town to nearby highways. The nearest airport with commercial service is approximately 50 miles away in Winner, providing essential connectivity for residents and visitors. Local transit options are limited, emphasizing the town's rural charm and independence.

History

Kennebec was founded in the late 19th century, serving as a railroad town that supported the agricultural community surrounding it. Key industries initially included farming and ranching, which continue to dominate the local economy today. The town has seen various developments over the years, though it has maintained its quaint and rustic character.

Did you know?

A lesser-known fact about Kennebec is its designation as the county seat of Lyman County, despite its small population. The town's unique name is derived from the Kennebec River in Maine, reflecting the influences of early settlers.

ZIP codes for Kennebec, SD (1)

ZIP code	City	County	Map
57544	Kennebec	Lyman	View map

Demographics & statistics

451

Population

34.7

Median age

$71,389

Median household income

$39,865

Per capita income

$131,400

Median home value

$860

Median monthly rent

84.1%

Home ownership

6.7%

Poverty rate

2.5%

Unemployment

184

Housing units

23.2%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	123	27.3%
18 and over	328	72.7%
65 and over	105	23.3%
Median age	34.7 years

Race & ethnicity

White 86.5%

American Indian / Alaska Native 12.2%

Two or more races 1.3%

Group	Count	%
White	390	86.5%
American Indian / Alaska Native	55	12.2%
Two or more races	6	1.3%

Household income

Under $10k 1.1%

$10k–$15k 2.8%

$15k–$25k 2.8%

$25k–$35k 5.7%

$35k–$50k 9.1%

$50k–$75k 30.7%

$75k–$100k 18.2%

$100k–$150k 22.2%

$200k+ 7.4%

Range	% of households
Under $10k	1.1%
$10k–$15k	2.8%
$15k–$25k	2.8%
$25k–$35k	5.7%
$35k–$50k	9.1%
$50k–$75k	30.7%
$75k–$100k	18.2%
$100k–$150k	22.2%
$200k+	7.4%
Median income	$71,389

Housing

Home values

Under $50k 18.9%

$50k–$100k 16.9%

$100k–$150k 31.8%

$150k–$200k 6.8%

$200k–$300k 7.4%

$300k–$500k 9.5%

$500k–$1M 8.8%

Housing overview

Metric	Value
Median home value	$131,400
Median rent / month	$860
Owner occupied	84.1%
Renter occupied	15.9%
Vacant	17.0%
Single-family detached	96.2%
Large apartment buildings	0.0%
Mobile homes	1.4%
Median rooms	6.1
Avg household size (owned)	2.64

Year built

Era	%
2020 or later	0.0%
2010–2019	3.8%
2000–2009	3.8%
1990–1999	9.9%
1980–1989	4.2%
1970–1979	5.2%
1960–1969	22.2%
1950–1959	13.2%
1940–1949	2.4%
1939 or earlier	35.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.2%
2 bedrooms	22.2%
3 bedrooms	43.9%
4 bedrooms	12.7%
5+ bedrooms	16.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	15.3%
2 vehicles	42.0%
3 or more	42.6%

Heating fuel

Fuel type	%
Utility gas	3.4%
Electricity	56.8%
Propane / LP gas	31.8%
Fuel oil	8.0%

Households & families

Household type	Count	%
Married-couple family	99	56.3%
Cohabiting couple	9	5.1%
Male householder, no spouse	41	23.3%
Female householder, no spouse	27	15.3%
Households with children under 18	39	22.2%
Households with seniors (65+)	71	40.3%
Average household size	2.56

Marital status

Status	Male	Female
Never married	23.2%	16.7%
Married	60.5%	61.3%
Separated	2.2%	0.0%
Widowed	3.8%	13.3%
Divorced	10.3%	8.7%

Education

Less than 9th grade 0.0%

Some HS, no diploma 9.5%

HS graduate 49.3%

Some college, no degree 11.1%

Associate's degree 6.9%

Bachelor's degree 21.2%

Graduate / professional 2.0%

Metric	%
HS diploma or higher	90.5%
Bachelor's or higher	23.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	17	17.0%
Kindergarten	0	0.0%
Elementary school	72	72.0%
High school	8	8.0%
College / grad school	3	3.0%

Employment

Industry of employment

Education & healthcare 20.3%

Agriculture & mining 19.8%

Information 10.4%

Construction 9.9%

Transportation & utilities 9.9%

Retail trade 8.9%

Public administration 8.3%

Wholesale trade 6.3%

Arts, food & hospitality 5.2%

Other services 1.0%

Occupation

Category	%
Management, business & arts	28.1%
Service	12.5%
Sales & office	27.1%
Natural resources & construction	21.4%
Production & transportation	10.9%

Employment type

Type	%
Private sector	54.7%
Government	22.4%
Self-employed	22.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	73.0%
Carpool	2.2%
Public transit	0.0%
Walk	7.6%
Other means	0.0%
Avg commute (minutes)	8.4

Poverty

All people 6.7%

Under 18 years 14.6%

18 and over 3.7%

Married-couple families 0.0%

Female-led households 40.0%

Income support

Source	% of households
Social Security	47.7%
Retirement income	24.4%
Supplemental Security	5.1%
Cash public assistance	1.1%
Food stamps / SNAP	11.9%

Health indicators

Condition	%
High blood pressure	34.0%
High cholesterol	33.8%
Heart disease	8.1%
Stroke	3.7%
Asthma	9.0%
Arthritis	26.5%
Kidney disease	3.4%
Pulmonary disease	7.0%
Cancer	8.1%

Behavior / access	%
Binge drinking	18.8%
No physical activity	23.8%
Less than 7 hrs sleep	28.1%
Fair or poor health	13.4%
Poor mental health	10.5%
Poor physical health	9.9%
No health insurance	12.1%
Visited doctor (checkup)	76.4%
Visited dentist	65.9%
Cholesterol screening	89.8%
Teeth loss	14.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	20	6.1%

Disability	%
Any disability	15.5%
Under 18	0.0%
18–64 years	20.6%
65 and over	22.9%

Health insurance coverage

Type	%
Private insurance	66.1%
Public insurance	34.1%
Uninsured under 19	5.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	423	93.8%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	451	100.0%
Born in same state	444	98.4%
Born in different state	344	76.3%
Foreign born	7	1.6%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Arab	110	24.4%
Italian	67	14.9%
Polish	50	11.1%

Ancestry	Count	%
French	25	5.5%
English	18	4%
Dutch	10	2.2%

Technology access

Metric	% of households
Computer access	39.0%
Internet access	97.2%

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

Frequently asked questions

What ZIP codes does Kennebec, SD have?

Kennebec, SD has one ZIP code: 57544. Each ZIP code serves a distinct delivery area within the city and surrounding region.