Interior ZIP Code List — Jackson County, SD
There is one unique ZIP code in Interior, South Dakota and it is 57750. Area code: 605.
1
ZIP codes
325.24
sq mi land
0.83
sq mi water
605
area code
Interior, SD ZIP code map
ZIP codes for Interior, SD (1)
Demographics & statistics
197
Population
32.3
Median age
$16,875
Median household income
$11,243
Per capita income
$196,900
Median home value
$923
Median monthly rent
44.0%
Home ownership
67.0%
Poverty rate
0.0%
Unemployment
78
Housing units
12.7%
Bachelor's or higher
Age distribution
Male
Female
11
Under 5
14
7
5–9
9
8
10–14
9
2
15–19
3
11
20–24
13
14
25–34
16
12
45–54
15
12
55–59
15
1
60–64
1
8
65–74
9
3
75–84
4
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 58 | 29.4% |
| 18 and over | 139 | 70.6% |
| 65 and over | 24 | 12.2% |
| Median age | 32.3 years | |
Race & ethnicity
American Indian / Alaska Native
59.4%
White
40.6%
| Group | Count | % |
|---|---|---|
| American Indian / Alaska Native | 117 | 59.4% |
| White | 80 | 40.6% |
Household income
Under $10k
42.9%
$15k–$25k
21.4%
$25k–$35k
13.1%
$35k–$50k
4.8%
$50k–$75k
16.7%
$75k–$100k
1.2%
| Range | % of households |
|---|---|
| Under $10k | 42.9% |
| $15k–$25k | 21.4% |
| $25k–$35k | 13.1% |
| $35k–$50k | 4.8% |
| $50k–$75k | 16.7% |
| $75k–$100k | 1.2% |
| Median income | $16,875 |
Housing
Home values
Under $50k
8.1%
$50k–$100k
2.7%
$100k–$150k
29.7%
$150k–$200k
10.8%
$200k–$300k
16.2%
$300k–$500k
32.4%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $196,900 |
| Median rent / month | $923 |
| Owner occupied | 44.0% |
| Renter occupied | 56.0% |
| Vacant | 32.8% |
| Single-family detached | 73.6% |
| Large apartment buildings | 0.0% |
| Mobile homes | 14.4% |
| Median rooms | 5.4 |
| Avg household size (owned) | 1.78 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.8% |
| 2000–2009 | 19.2% |
| 1990–1999 | 5.6% |
| 1980–1989 | 18.4% |
| 1970–1979 | 9.6% |
| 1960–1969 | 0.0% |
| 1950–1959 | 15.2% |
| 1940–1949 | 2.4% |
| 1939 or earlier | 28.8% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.8% |
| 2 bedrooms | 44.8% |
| 3 bedrooms | 23.2% |
| 4 bedrooms | 31.2% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 28.6% |
| 1 vehicle | 32.1% |
| 2 vehicles | 26.2% |
| 3 or more | 13.1% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 10.7% |
| Propane / LP gas | 35.7% |
| Fuel oil | 33.3% |
| Wood | 20.2% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 24 | 28.6% |
| Cohabiting couple | 34 | 40.5% |
| Male householder, no spouse | 8 | 9.5% |
| Female householder, no spouse | 18 | 21.4% |
| Households with children under 18 | 42 | 50.0% |
| Households with seniors (65+) | 14 | 16.7% |
| Average household size | 2.35 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 45.9% | 56.4% |
| Married | 45.9% | 26.9% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 7.7% |
| Divorced | 8.2% | 9.0% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
34.5%
HS graduate
33.6%
Some college, no degree
13.6%
Associate's degree
5.5%
Bachelor's degree
4.5%
Graduate / professional
8.2%
| Metric | % |
|---|---|
| HS diploma or higher | 65.5% |
| Bachelor's or higher | 12.7% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 25 | 100.0% |
| High school | 0 | 0.0% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Arts, food & hospitality
33.3%
Education & healthcare
27.5%
Retail trade
15.7%
Wholesale trade
13.7%
Agriculture & mining
9.8%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 31.4% |
| Service | 52.9% |
| Sales & office | 2.0% |
| Natural resources & construction | 0.0% |
| Production & transportation | 13.7% |
Employment type
| Type | % |
|---|---|
| Private sector | 66.7% |
| Government | 27.5% |
| Self-employed | 0.0% |
| Unpaid family workers | 5.9% |
Commute
| Method | % |
|---|---|
| Drive alone | 52.9% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 15.7% |
| Other means | 0.0% |
| Avg commute (minutes) | 24.0 |
Poverty
All people
67.0%
Under 18 years
100.0%
18 and over
53.2%
Married-couple families
33.3%
Female-led households
100.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 16.7% |
| Retirement income | 3.6% |
| Supplemental Security | 9.5% |
| Cash public assistance | 9.5% |
| Food stamps / SNAP | 50.0% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 39.0% |
| High cholesterol | 33.6% |
| Heart disease | 9.3% |
| Stroke | 5.2% |
| Asthma | 12.2% |
| Arthritis | 28.3% |
| Kidney disease | 4.3% |
| Pulmonary disease | 10.7% |
| Cancer | 6.6% |
| Behavior / access | % |
|---|---|
| Binge drinking | 18.5% |
| No physical activity | 29.9% |
| Less than 7 hrs sleep | 32.7% |
| Fair or poor health | 21.9% |
| Poor mental health | 14.9% |
| Poor physical health | 14.9% |
| No health insurance | 15.3% |
| Visited doctor (checkup) | 75.9% |
| Visited dentist | 52.6% |
| Cholesterol screening | 85.3% |
| Teeth loss | 23.6% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 7 | 5.0% |
| Disability | % |
|---|---|
| Any disability | 6.6% |
| Under 18 | 0.0% |
| 18–64 years | 6.1% |
| 65 and over | 25.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 19.8% |
| Public insurance | 73.6% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 172 | 87.3% |
| 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) | 197 | 100.0% |
| Born in same state | 197 | 100.0% |
| Born in different state | 143 | 72.6% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 21 | 10.7% |
| French | 11 | 5.6% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 6 | 3% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 42.6% |
| Internet access | 86.9% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.