Marion, SD

City in Turner County, SD, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

981

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

51.7

years ∙ half population younger than 51.7, half older

Diversity Index

13.1%

chance two random people differ in race and ethnicity

Nativity

0.2%

foreign-born population

99.8%Native

0.2% Foreign-born

Geographic Context

Location, size, and surroundings

About

Marion is a city within Turner County, South Dakota, United States.

Location

City in Turner County, SD, US

Co-ordinates

DEC43.423571° N, 97.260549° W

DMS43° 25′ 24.86″ N, 97° 15′ 37.98″ W

Population Density & area

1,130/sq mi (436.4/km²)

Total Area

0.868 sq mi (2.248 km²)

Land Area

0.868 sq mi (2.248 km²) · 100%

Water Area

0 sq mi (0 km²) · 0%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

49.4% male

Male 49.4%

Female 50.6%

males per 100 females

Marion 97.8

Turner County 100.7

South Dakota 103.1

Nativity

0.2%

foreign-born population

99.8%Native

0.2% Foreign-born

% Foreign-born

Marion 0.2%

Turner County 2%

South Dakota 4%

Age Distribution

How the population is spread across age groups

Median Age

51.7

years ∙ half population younger than 51.7, half older

Marion

51.7

Turner County

41.2

South Dakota

Dependency ratio

120.9

dependents per 100 working-age adults

Marion 120.9

Turner County 83.9

South Dakota 73

AGE DISTRIBUTION

Distribution of age group

Median age

	Marion	Turner County	South Dakota
Age Group
Children (Under 18)	21.1%	25.3%	24.2%
Working age (18-64)	45.3%	54.4%	57.8%
Senior (65+)	33.6%	20.3%	18%
Dependency ratio
Total dependency ratio	120.9	83.9	73
Child dependency ratio	46.6	46.5	41.9
Old-age dependency ratio	74.3	37.3	31.1

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

93.1%

Black

Asian

Hispanic

1.2%

Other

5.7%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

13.1%

chance two random people differ in race and ethnicity

Marion 13.1%

Turner County 13.3%

South Dakota 35.3%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Marion population

	Marion	Turner County	South Dakota
Hispanic or Latino	1.2%	3.5%	4.8%
Mexican	1.2%	0.6%	2.6%
Puerto Rican	0%	0.3%	0.4%
Cuban	0%	0.1%	0.1%
Other Hispanic / Latino	0%	2.5%	1.7%
Not Hispanic or Latino	98.8%	96.5%	95.2%
One race	94.3%	94.5%	90.8%
White	93.1%	93%	79.8%
Black or African American	0%	0.4%	2.1%
American Indian and Alaska Native	0%	0.5%	7.1%
Asian	0%	0.3%	1.4%
Native Hawaiian and Other Pacific Islander	1.2%	0.1%	0%
Some Other Race	0%	0%	0.3%
Two or more races (Multiracial)	4.5%	2%	4.4%

Household & Families Composition

Household size, type, and family structure

Household structure

61.7% family

Family 61.7%

Non family 38.3%

% family households

Marion 61.7%

Turner County 63.5%

South Dakota 61.3%

Average household size

2.29

persons per household

Marion

2.29

Turner County

2.42

South Dakota

2.39

Household & Family COMPOSITION

Households

Percentage of Marion population

	Marion	Turner County	South Dakota
Total households	399	3,568	365,544
Average houshold size	2.29	2.42	2.39
Family households	246	2,264	224,058
Average family size	2.84	3.05	3.05
Married couple family	198	1,896	176,597
Other families	48	368	47,461
Male householder	25	193	17,711
Female householder	23	175	29,750
Non-family households	153	1,304	141,486
One-person households	129	1,086	116,755
Male householder	54	607	57,880
Senior (65+) living alone	34	210	17,403
Female householder	75	479	58,875
Senior (65+) living alone	50	277	29,381
Other living arrangements	24	218	24,731

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

432

housing units

Marion 432

Turner County 3,913

South Dakota 408,584

Occupancy status

92.4% occupied

Occupied 92.4%

Vacant 7.6%

vacancy rate

Marion 7.6%

Turner County 8.8%

South Dakota 10.5%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

79.4%

Single family houses

79.4%

Apartments in multi-unit structures

16.7%

Mobile homes

3.9%

Boat, RV, van, etc

Median Year Built

1965

Half of houses were built before 1965, and half after.

Historic ∙ 1939 or earlier

22.5%

Postwar & mid-century ∙ 1940 - 1969

35.5%

Late 20th century ∙ 1970 - 1999

26.6%

Modern ∙ 2000 or later

15.5%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Marion	Turner County	South Dakota
Rooms per unit
Median rooms	6.2	6.5	5.9
1–3 rooms	7.7%	7.7%	13.6%
4–6 rooms	47.8%	42.3%	44.6%
7+ rooms	44.4%	49.9%	41.8%
Bedrooms
No bedroom / studio	0.5%	1%	1.9%
1 bedroom	8.8%	7.9%	10.1%
2 bedrooms	33.1%	24.4%	26.4%
3 bedrooms	31.5%	35%	32%
4+ bedrooms	26.1%	31.7%	29.6%
At a glance
Median year built	1965	1963	1982
Total housing units	432	3,913	408,584

Occupancy Profile

Who is inside and how they use it

Homeownership

75.9% owners

Renter-occupied 24.1%

Owner-occupied 75.9%

homeownership rate

Marion 75.9%

Turner County 79%

South Dakota 68.6%

Average household size

2.37

Owner-occupied

2.02

Renter-occupied

owner-occupied average size

Marion 2.37

Turner County 2.53

South Dakota 2.54

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Marion	Turner County	South Dakota
Total occupied units	399	3,568	365,544
Year moved in
2020 or later	24.8%	17.9%	25.4%
2010 to 2019	38.6%	40.6%	39.7%
2000 to 2009	21.1%	19.1%	16.2%
1999 or earlier	15.5%	22.4%	18.7%
Occupants per room
1.00 or fewer	99%	99.4%	97.7%
1.01 to 1.50	0%	0.5%	1.6%
1.51 or more	1%	0.1%	0.7%
Vehicles availability
No vehicles	4.3%	3.9%	5.2%
1 vehicle	24.1%	22.1%	28.4%
2 vehicles	36.6%	32.1%	36.3%
3 or more vehicles	35.1%	41.9%	30.1%
House heating fuel used
Gas	63.6%	56.1%	63.1%
Electricity	28.6%	35.6%	32.4%
Solar	0%	0%	0%
Fuel oil, kerosene etc	3.3%	3.9%	1.3%
All other fuels	4.5%	3.8%	2.4%
No fuel used	0%	0.6%	0.8%
Selected characteristics
Lacking complete plumbing	0.5%	0.4%	0.5%
Lacking complete kitchen	1%	1%	0.9%
No telephone service available	4%	1.4%	1.1%

Housing Value

What owner-occupied units are worth

Median home value

$164,500

owner-occupied units

Median value(USD)

Marion

$164,500

Turner County

$222,900

South Dakota

$257,400

Housing Cost Burden

22.8%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

22.8%

Owners without a mortgage

10.2%

Renters

35.2%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Marion	Turner County	South Dakota
Property value
Median Value	$164,500	$222,900	$257,400
Under $100,000	28.4%	22.2%	16.1%
$100,000 - $200,000	30%	23.5%	19.5%
$200,000 - $300,000	12.5%	17.6%	24.4%
$300,000 - $500,000	17.8%	25.9%	26%
$500,000 - $1,000,000	11.2%	9.9%	12.1%
$1,000,000 and more	0%	0.8%	1.8%
Owner-occupied households
With a mortgage	41.9%	53.2%	54.5%
Without a mortgage	58.1%	46.8%	45.5%
Median monthly owner costs
With a mortgage	$1,243	$1,553	$1,680
Without a mortgage	$609	$573	$617
Gross rent
Median rent	$813	$742	$946

Education Profile

How educated is the community and how education pays off

Adults with a college degree

18.8%

of adults 25+ with a bachelor's degree or higher

Marion 18.8%

Turner County 27.3%

South Dakota 31.9%

Adults without a high school diploma

10.5%

of adults (25+) without a high school diploma

Marion 10.5%

Turner County 6.9%

South Dakota 6.8%

School Enrollment

Who is enrolled in school and at what level

School enrollment

159

population (age 3+) enrolled in school

Nursery / Preschool

6.9%

K–12

84.3%

College / Undergraduate

8.8%

Graduate / Professional

College-going rate (18-24 yr olds)

24.1%

of 18-24-year-olds in college or graduate school

Marion

24.1%

Turner County

21.5%

South Dakota

35.1%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Marion	Turner County	South Dakota
Total enrolled (age 3+)	159	2,002	216,085
Nursery / preschool	6.9%	8.6%	6.1%
K–12	84.3%	80.6%	73%
Kindergarten	5.7%	3.8%	5.6%
Elementary: Grades 1–4	23.3%	20.8%	22.3%
Elementary: Grades 5–8	34%	32.2%	22.8%
High School: Grades 9–12	21.4%	23.9%	22.3%
College or graduate school	8.8%	10.7%	20.9%
College, undergraduate	8.8%	8.2%	17.1%
Graduate, professional school	0%	2.5%	3.8%
College-going rate · 18-24 yr olds	24.1%	21.5%	35.1%
School type
Public school	74.8%	87.9%	86.9%
Private school	25.2%	12.1%	13.1%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

745

population 25 years and over

Total adults (25+)

Less than 9th grade

3.5%

9th-12th, no diploma

HS graduate

36.4%

Some college no degree

22.4%

Associates degree

11.9%

Bachelors degree

14.8%

Graduate or professional degree

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

38.5% · 61.5%

9th-12th, no diploma

73.1% · 26.9%

HS graduate

48.3% · 51.7%

Some college no degree

53.9% · 46.1%

Associates degree

32.6% · 67.4%

Bachelors degree

49.1% · 50.9%

Graduate or professional degree

30% · 70%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Marion	Turner County	South Dakota
Population (25+)	745	6,048	603,746
Less than 9th grade	3.5%	2.5%	2.6%
9th–12th, no diploma	7%	4.4%	4.2%
High school diploma or GED	36.4%	31.3%	29%
Some college, no degree	22.4%	20.4%	19.9%
Associate's degree	11.9%	14.1%	12.3%
Bachelor's degree or higher	18.8%	27.3%	31.9%
Bachelor's degree	14.8%	20.2%	21.9%
Graduate or professional	4%	7.1%	10%
High School or higher	89.5%	93%	93.2%

Earnings by education level

percentage as applicable

Median Earnings

$47,672

Median earnings for adults 25+, by level

Less than HS graduate

$—

HS graduate

$50,625

Some college or associates

$45,750

Bachelors degree

$53,750

Graduate or professional degree

$55,833

Poverty Rate

10.7%

for ages 25+, with bachelors degree or higher

Less than HS graduate

22.2%

HS graduate

7.6%

Some college or associates

11.9%

Bachelors degree or higher

10.7%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Marion	Turner County	South Dakota
Median earnings
Population 25+, with earnings	$47,672	$49,509	$49,402
Less than high school graduate	$—	$42,105	$33,790
High school graduate (includes equivalency)	$50,625	$46,712	$40,544
Some college or associate's degree	$45,750	$48,833	$47,061
Bachelor's degree	$53,750	$53,421	$58,363
Graduate or professional degree	$55,833	$61,523	$72,377
Poverty rates
Less than high school graduate	22.2%	17.6%	28%
High school graduate (includes equivalency)	7.6%	9.3%	13.2%
Some college or associate's degree	11.9%	9.6%	8.5%
Bachelor's degree or higher	10.7%	4.5%	4.2%

Insights for Marion, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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