Isabel ZIP Codes — Dewey County, SD

There is one unique ZIP code in Isabel, South Dakota and it is 57633. Area code: 605.
1
ZIP codes
812.64
sq mi land
2.72
sq mi water
605
area code
Isabel, SD ZIP code map

About Isabel, SD

Isabel is a small community located in South Dakota, known for its rural charm and scenic landscapes. Situated in Dewey County, this quaint town offers a unique blend of tranquility and outdoor recreational opportunities. With a rich local culture and friendly atmosphere, Isabel is a hidden gem in the heart of the Great Plains.

Location & geography

Isabel is located in the central part of South Dakota, making it accessible to various attractions across the state. The city is roughly 34 miles northwest of the larger town of Gettysburg and about 41 miles south of Mobridge, providing a serene environment surrounded by nature. Its total area encompasses 812.64 square miles of land and 2.72 square miles of water, featuring diverse terrain and open spaces.

Community & economy

The character of Isabel reflects a close-knit community that values its agricultural roots and traditional lifestyle. Residents engage primarily in farming and ranching, contributing significantly to the local economy and culture. Daily life in Isabel is marked by community events and gatherings that foster strong relationships among neighbors.

Transportation

Isabel is accessible via several highways, including Highway 34, which runs east and west, connecting the city to neighboring regions. The nearest major airport is the Mobridge Municipal Airport, located approximately 41 miles away. Public transit options are limited, making personal vehicles the primary mode of transportation for residents.

History

Isabel was founded in the early 20th century, mainly as a railroad town that served agricultural enterprises in the area. Over the years, the local economy focused on farming, and the community has preserved its rural charm through generations. Notable events in Isabel's history include the establishment of various co-operatives that support local farmers.

Did you know?

An interesting fact about Isabel is that it has only one ZIP code, 57633, which represents the entire community. This highlights the small size and tight-knit nature of the area, where residents often know one another personally.

ZIP codes for Isabel, SD (1)
ZIP code City County Map
57633 Isabel Dewey View map

Demographics & statistics

402
Population
38.2
Median age
$71,250
Median household income
$40,008
Per capita income
$71,700
Median home value
$738
Median monthly rent
75.0%
Home ownership
7.0%
Poverty rate
4.3%
Unemployment
168
Housing units
19.7%
Bachelor's or higher

Age distribution

Male Female
12
Under 5
11
9
5–9
8
24
10–14
22
11
15–19
10
11
20–24
10
16
25–34
15
50
35–44
45
14
45–54
12
16
55–59
14
18
60–64
16
12
65–74
11
9
75–84
8
9
85+
9
← Male
Female →

Age summary

GroupCount%
Under 189824.4%
18 and over30475.6%
65 and over5814.4%
Median age38.2 years

Race & ethnicity

White 80.1%
American Indian / Alaska Native 19.2%
Two or more races 0.7%
GroupCount%
White32280.1%
American Indian / Alaska Native7719.2%
Two or more races30.7%

Household income

Under $10k 4.5%
$10k–$15k 1.1%
$15k–$25k 2.8%
$25k–$35k 4.0%
$35k–$50k 14.2%
$50k–$75k 28.4%
$75k–$100k 14.8%
$100k–$150k 6.3%
$150k–$200k 8.0%
$200k+ 15.9%
Range% of households
Under $10k4.5%
$10k–$15k1.1%
$15k–$25k2.8%
$25k–$35k4.0%
$35k–$50k14.2%
$50k–$75k28.4%
$75k–$100k14.8%
$100k–$150k6.3%
$150k–$200k8.0%
$200k+15.9%
Median income$71,250

Housing

Home values

Under $50k 34.1%
$50k–$100k 26.5%
$100k–$150k 25.0%
$150k–$200k 1.5%
$200k–$300k 8.3%
$300k–$500k 4.5%

Housing overview

MetricValue
Median home value$71,700
Median rent / month$738
Owner occupied75.0%
Renter occupied25.0%
Vacant17.0%
Single-family detached81.6%
Large apartment buildings0.0%
Mobile homes18.4%
Median rooms6.2
Avg household size (owned)2.49

Year built

Era%
2020 or later0.0%
2010–20193.8%
2000–20091.9%
1990–19999.0%
1980–19897.5%
1970–197916.5%
1960–196929.2%
1950–19595.7%
1940–19491.9%
1939 or earlier24.5%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom1.9%
2 bedrooms24.5%
3 bedrooms33.5%
4 bedrooms22.6%
5+ bedrooms17.5%

Vehicles per household

Vehicles% of households
No vehicle1.7%
1 vehicle31.3%
2 vehicles29.0%
3 or more38.1%

Heating fuel

Fuel type%
Electricity12.5%
Propane / LP gas75.6%
Fuel oil10.2%
Wood0.6%

Households & families

Household typeCount%
Married-couple family9855.7%
Cohabiting couple63.4%
Male householder, no spouse3922.2%
Female householder, no spouse3318.8%
Households with children under 186034.1%
Households with seniors (65+)3721.0%
Average household size2.28

Marital status

StatusMaleFemale
Never married25.7%26.8%
Married58.7%54.4%
Separated0.0%0.0%
Widowed0.0%11.4%
Divorced15.6%7.4%

Education

Less than 9th grade 4.7%
Some HS, no diploma 4.4%
HS graduate 27.0%
Some college, no degree 24.1%
Associate's degree 20.1%
Bachelor's degree 11.3%
Graduate / professional 8.4%
Metric%
HS diploma or higher90.9%
Bachelor's or higher19.7%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool22.2%
Kindergarten55.4%
Elementary school5154.8%
High school2223.7%
College / grad school1314.0%

Employment

Industry of employment

Education & healthcare 30.2%
Agriculture & mining 23.4%
Retail trade 14.9%
Construction 9.9%
Wholesale trade 6.3%
Public administration 6.3%
Transportation & utilities 3.2%
Arts, food & hospitality 2.7%
Other services 1.4%
Manufacturing 0.9%
Information 0.9%

Occupation

Category%
Management, business & arts50.0%
Service5.4%
Sales & office18.9%
Natural resources & construction21.2%
Production & transportation4.5%

Employment type

Type%
Private sector43.7%
Government30.2%
Self-employed22.5%
Unpaid family workers3.6%

Commute

Method%
Drive alone70.3%
Carpool4.1%
Public transit0.0%
Walk1.4%
Other means0.0%
Avg commute (minutes)19.1

Poverty

All people 7.0%
Under 18 years 4.1%
18 and over 7.9%
Married-couple families 2.0%
Female-led households 13.3%

Income support

Source% of households
Social Security23.3%
Retirement income12.5%
Supplemental Security4.5%
Cash public assistance5.7%
Food stamps / SNAP4.0%

Health indicators

Condition%
High blood pressure38.2%
High cholesterol33.8%
Heart disease10.4%
Stroke5.2%
Asthma10.5%
Arthritis30.4%
Kidney disease4.4%
Pulmonary disease10.2%
Cancer7.9%
Behavior / access%
Binge drinking17.0%
No physical activity31.5%
Less than 7 hrs sleep30.1%
Fair or poor health19.6%
Poor mental health12.7%
Poor physical health13.8%
No health insurance14.7%
Visited doctor (checkup)76.7%
Visited dentist58.6%
Cholesterol screening86.9%
Teeth loss23.1%

Veterans & disability

VeteransCount%
Civilian veterans144.6%
Disability%
Any disability12.4%
Under 180.0%
18–64 years11.4%
65 and over37.9%

Health insurance coverage

Type%
Private insurance69.9%
Public insurance31.1%
Uninsured under 1916.3%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only37994.3%
Spanish20.5%
Other Indo-European00.0%
Asian & Pacific Islander20.5%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)402100.0%
Born in same state402100.0%
Born in different state28370.4%
Foreign born00.0%
Naturalized citizen00.0%
Not a US citizen00.0%

Ancestry

AncestryCount%
Italian6616.4%
Arab5313.2%
Polish4611.4%
French174.2%
AncestryCount%
Dutch61.5%
Irish41%
English10.2%

Technology access

Metric% of households
Computer access43.8%
Internet access90.3%

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

Frequently asked questions
What ZIP codes does Isabel, SD have?
Isabel, SD has one ZIP code: 57633. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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