Jefferson ZIP Code List — Union County, SD

There is one unique ZIP code in Jefferson, South Dakota and it is 57038. Area code: 605.

ZIP codes

50.58

sq mi land

2.53

sq mi water

605

area code

Jefferson, SD ZIP code map

About Jefferson, SD

Jefferson is a charming small city located in the state of South Dakota, nestled within Union County. Known for its friendly atmosphere and close-knit community, Jefferson offers a unique blend of rural charm and accessibility. The city, primarily residential in nature, serves as a peaceful retreat while still being connected to larger urban areas in the region.

Location & geography

Jefferson is strategically situated just off of Interstate 29, making it easily accessible to nearby cities and attractions. The city is surrounded by natural beauty, with a total land area of 50.58 square miles and a water area covering 2.53 square miles, which adds to its scenic landscapes. Nearby cities include Sioux City, Iowa, approximately 10 miles to the south, and North Sioux City, South Dakota, just about 8 miles to the northwest.

Community & economy

The character of Jefferson is strongly defined by its welcoming residents and a focus on community involvement. Local industries include agriculture and small businesses that cater to the needs of residents and visitors alike. Daily life in Jefferson combines small-town friendliness with various community events, fostering a sense of belonging among its citizens.

Transportation

Jefferson is conveniently located near Interstate 29, providing straightforward access for commuters and travelers alike. The nearest major airport is Sioux Gateway Airport in Sioux City, which is only a short drive away, making air travel feasible for residents. Public transit options are limited, common in small rural communities, but the city is well-connected by road networks.

History

Jefferson was established in the late 19th century and has since maintained its role as a rural community within Union County. Historically, agriculture has been a key industry, shaping the economic landscape and lifestyle of the residents. Notable events in the city's development include its integration into the regional transportation network, allowing for continued growth and accessibility.

Did you know?

One little-known fact about Jefferson is that it boasts a rich agricultural heritage that dates back to its founding. The city is also celebrated for its community events that highlight South Dakota's cultural traditions.

ZIP codes for Jefferson, SD (1)

ZIP code	City	County	Map
57038	Jefferson	Union	View map

Demographics & statistics

1,577

Population

43.8

Median age

$84,083

Median household income

$50,333

Per capita income

$286,100

Median home value

$613

Median monthly rent

91.5%

Home ownership

3.2%

Poverty rate

7.4%

Unemployment

646

Housing units

33.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

132

35–44

139

45–54

148

55–59

60–64

105

65–74

112

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	386	24.5%
18 and over	1,191	75.5%
65 and over	277	17.6%
Median age	43.8 years

Race & ethnicity

White 94.3%

Hispanic or Latino 2.1%

American Indian / Alaska Native 1.4%

Two or more races 1.2%

Other race 0.9%

Group	Count	%
White	1,519	94.3%
Hispanic or Latino	34	2.1%
American Indian / Alaska Native	23	1.4%
Two or more races	20	1.2%
Other race	15	0.9%

Household income

Under $10k 1.9%

$10k–$15k 0.4%

$15k–$25k 4.9%

$25k–$35k 0.3%

$35k–$50k 14.7%

$50k–$75k 20.5%

$75k–$100k 12.7%

$100k–$150k 9.2%

$150k–$200k 10.1%

$200k+ 25.3%

Range	% of households
Under $10k	1.9%
$10k–$15k	0.4%
$15k–$25k	4.9%
$25k–$35k	0.3%
$35k–$50k	14.7%
$50k–$75k	20.5%
$75k–$100k	12.7%
$100k–$150k	9.2%
$150k–$200k	10.1%
$200k+	25.3%
Median income	$84,083

Housing

Home values

Under $50k 1.4%

$50k–$100k 3.3%

$100k–$150k 16.4%

$150k–$200k 18.3%

$200k–$300k 11.4%

$300k–$500k 41.0%

$500k–$1M 8.2%

Housing overview

Metric	Value
Median home value	$286,100
Median rent / month	$613
Owner occupied	91.5%
Renter occupied	8.5%
Vacant	1.7%
Single-family detached	94.0%
Large apartment buildings	0.0%
Mobile homes	1.6%
Median rooms	7.7
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.4%
2010–2019	5.7%
2000–2009	15.9%
1990–1999	15.2%
1980–1989	6.4%
1970–1979	33.8%
1960–1969	1.0%
1950–1959	5.2%
1940–1949	1.1%
1939 or earlier	15.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.3%
1 bedroom	0.3%
2 bedrooms	15.9%
3 bedrooms	41.7%
4 bedrooms	32.2%
5+ bedrooms	9.6%

Vehicles per household

Vehicles	% of households
No vehicle	2.9%
1 vehicle	8.9%
2 vehicles	29.7%
3 or more	58.4%

Heating fuel

Fuel type	%
Utility gas	24.7%
Electricity	53.4%
Propane / LP gas	12.6%
Wood	0.3%

Households & families

Household type	Count	%
Married-couple family	412	59.5%
Cohabiting couple	73	10.5%
Male householder, no spouse	137	19.8%
Female householder, no spouse	71	10.2%
Households with children under 18	156	22.5%
Households with seniors (65+)	197	28.4%
Average household size	2.28

Marital status

Status	Male	Female
Never married	21.6%	9.2%
Married	54.1%	71.9%
Separated	3.4%	0.8%
Widowed	0.3%	7.2%
Divorced	20.7%	10.9%

Education

Less than 9th grade 5.7%

Some HS, no diploma 1.3%

HS graduate 28.7%

Some college, no degree 13.6%

Associate's degree 17.2%

Bachelor's degree 17.9%

Graduate / professional 15.6%

Metric	%
HS diploma or higher	93.0%
Bachelor's or higher	33.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	23	5.7%
Kindergarten	6	1.5%
Elementary school	278	68.5%
High school	88	21.7%
College / grad school	11	2.7%

Employment

Industry of employment

Education & healthcare 20.8%

Manufacturing 18.0%

Finance & real estate 17.3%

Construction 13.3%

Agriculture & mining 12.5%

Wholesale trade 4.1%

Retail trade 3.8%

Arts, food & hospitality 3.6%

Other services 2.2%

Public administration 1.4%

Transportation & utilities 1.2%

Professional & management 1.0%

Information 0.6%

Occupation

Category	%
Management, business & arts	45.4%
Service	8.0%
Sales & office	28.6%
Natural resources & construction	5.3%
Production & transportation	12.7%

Employment type

Type	%
Private sector	79.0%
Government	6.0%
Self-employed	15.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	79.6%
Carpool	2.2%
Public transit	0.0%
Walk	0.0%
Other means	5.1%
Avg commute (minutes)	21.8

Poverty

All people 3.2%

Under 18 years 6.9%

18 and over 2.2%

Married-couple families 0.7%

Female-led households 43.8%

Income support

Source	% of households
Social Security	23.5%
Retirement income	20.2%
Supplemental Security	2.5%
Cash public assistance	0.6%
Food stamps / SNAP	4.3%

Health indicators

Condition	%
High blood pressure	28.2%
High cholesterol	29.9%
Heart disease	5.7%
Stroke	2.5%
Asthma	8.5%
Arthritis	22.5%
Kidney disease	2.5%
Pulmonary disease	5.0%
Cancer	6.5%

Behavior / access	%
Binge drinking	22.0%
No physical activity	20.0%
Less than 7 hrs sleep	28.5%
Fair or poor health	9.6%
Poor mental health	10.3%
Poor physical health	7.8%
No health insurance	10.1%
Visited doctor (checkup)	74.7%
Visited dentist	71.1%
Cholesterol screening	89.6%
Teeth loss	11.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	75	6.3%

Disability	%
Any disability	12.9%
Under 18	18.4%
18–64 years	10.5%
65 and over	13.4%

Health insurance coverage

Type	%
Private insurance	83.0%
Public insurance	25.6%
Uninsured under 19	1.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,562	99.0%
Spanish	14	0.9%
Other Indo-European	14	0.9%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,561	99.0%
Born in same state	1,561	99.0%
Born in different state	172	10.9%
Foreign born	0	0.0%
Naturalized citizen	16	1.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	142	9%
Dutch	128	8.1%
Italian	122	7.7%
Arab	93	5.9%

Ancestry	Count	%
German	45	2.9%
Polish	42	2.7%
English	11	0.7%

Technology access

Metric	% of households
Computer access	43.9%
Internet access	96.0%

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

Frequently asked questions

What is the ZIP code for Jefferson, SD?

Jefferson, SD has one ZIP code: 57038.

What is the main ZIP code for Jefferson, SD?

The primary ZIP code for Jefferson, SD is 57038. The city uses area code 605 for phone service.

What county is Jefferson, SD in?

Jefferson is located in Union County, South Dakota.

How many ZIP codes are in Jefferson, SD?

Jefferson, SD has 1 ZIP code.

What ZIP code should I use for mail delivery to downtown Jefferson, South Dakota?

All mail to downtown Jefferson, including businesses and residences in the central business district, uses ZIP code 57038.

What is the ZIP code for Jefferson City Hall and other municipal buildings in Jefferson, SD?

Jefferson's municipal government offices, including City Hall, are located in ZIP code 57038, which serves the entire city of Jefferson in Union County.