Woonsocket, SD

City in Sanborn County, SD, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

759

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

Median Age

41.3

years ∙ half population younger than 41.3, half older

Diversity Index

22.5%

chance two random people differ in race and ethnicity

Nativity

1.2%

foreign-born population

98.8%Native

1.2% Foreign-born

Geographic Context

Location, size, and surroundings

About

Woonsocket is a city within Sanborn County, South Dakota, United States.

Location

City in Sanborn County, SD, US

Co-ordinates

DEC44.054198° N, 98.271711° W

DMS44° 03′ 15.11″ N, 98° 16′ 18.16″ W

Population Density & area

968.1/sq mi (373.7/km²)

Total Area

0.795 sq mi (2.06 km²)

Land Area

0.784 sq mi (2.031 km²) · 98.6%

Water Area

0.011 sq mi (0.029 km²) · 1.4%

Demographics & Living

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

Population Composition

Key characteristics of the population

Sex Distribution

50.1% male

Male 50.1%

Female 49.9%

males per 100 females

Woonsocket 100.3

Sanborn County 112.3

South Dakota 103.1

Nativity

1.2%

foreign-born population

98.8%Native

1.2% Foreign-born

% Foreign-born

Woonsocket 1.2%

Sanborn County 1.7%

South Dakota 4%

Age Distribution

How the population is spread across age groups

Median Age

41.3

years ∙ half population younger than 41.3, half older

Woonsocket

41.3

Sanborn County

40.1

South Dakota

Dependency ratio

80.3

dependents per 100 working-age adults

Woonsocket 80.3

Sanborn County 85.7

South Dakota 73

AGE DISTRIBUTION

Distribution of age group

Median age

	Woonsocket	Sanborn County	South Dakota
Age Group
Children (Under 18)	26.9%	25.9%	24.2%
Working age (18-64)	55.4%	53.9%	57.8%
Senior (65+)	17.7%	20.2%	18%
Dependency ratio
Total dependency ratio	80.3	85.7	73
Child dependency ratio	48.5	48.1	41.9
Old-age dependency ratio	31.8	37.5	31.1

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

87.7%

Black

Asian

Hispanic

4.2%

Other

8.1%

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

22.5%

chance two random people differ in race and ethnicity

Woonsocket 22.5%

Sanborn County 18.3%

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 Woonsocket population

	Woonsocket	Sanborn County	South Dakota
Hispanic or Latino	4.2%	5.2%	4.8%
Mexican	3.2%	2.8%	2.6%
Puerto Rican	1.1%	0.8%	0.4%
Cuban	0%	0%	0.1%
Other Hispanic / Latino	0%	1.6%	1.7%
Not Hispanic or Latino	95.8%	94.8%	95.2%
One race	94.2%	92.5%	90.8%
White	87.7%	90.2%	79.8%
Black or African American	0%	0%	2.1%
American Indian and Alaska Native	6.5%	2.3%	7.1%
Asian	0%	0%	1.4%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	0%	0%	0.3%
Two or more races (Multiracial)	1.6%	2.3%	4.4%

Household & Families Composition

Household size, type, and family structure

Household structure

48.8% family

Family 48.8%

Non family 51.2%

% family households

Woonsocket 48.8%

Sanborn County 61.9%

South Dakota 61.3%

Average household size

2.16

persons per household

Woonsocket

2.16

Sanborn County

2.47

South Dakota

2.39

Household & Family COMPOSITION

Households

Percentage of Woonsocket population

	Woonsocket	Sanborn County	South Dakota
Total households	328	946	365,544
Average houshold size	2.16	2.47	2.39
Family households	160	586	224,058
Average family size	3.1	3.2	3.05
Married couple family	133	521	176,597
Other families	27	65	47,461
Male householder	18	26	17,711
Female householder	9	39	29,750
Non-family households	168	360	141,486
One-person households	144	312	116,755
Male householder	71	193	57,880
Senior (65+) living alone	7	68	17,403
Female householder	73	119	58,875
Senior (65+) living alone	40	67	29,381
Other living arrangements	24	48	24,731

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

376

housing units

Woonsocket 376

Sanborn County 1,168

South Dakota 408,584

Occupancy status

87.2% occupied

Occupied 87.2%

Vacant 12.8%

vacancy rate

Woonsocket 12.8%

Sanborn County 19%

South Dakota 10.5%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

67%

Single family houses

67%

Apartments in multi-unit structures

15.4%

Mobile homes

17.6%

Boat, RV, van, etc

Median Year Built

1963

Half of houses were built before 1963, and half after.

Historic ∙ 1939 or earlier

36.4%

Postwar & mid-century ∙ 1940 - 1969

24.4%

Late 20th century ∙ 1970 - 1999

24.1%

Modern ∙ 2000 or later

14.9%

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

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Woonsocket	Sanborn County	South Dakota
Rooms per unit
Median rooms	5.9	6.2	5.9
1–3 rooms	12.5%	8.5%	13.6%
4–6 rooms	49.8%	48%	44.6%
7+ rooms	37.7%	43.6%	41.8%
Bedrooms
No bedroom / studio	0%	0%	1.9%
1 bedroom	14.1%	8.5%	10.1%
2 bedrooms	29.5%	22.9%	26.4%
3 bedrooms	33.2%	37.2%	32%
4+ bedrooms	23.2%	31.4%	29.6%
At a glance
Median year built	1963	1961	1982
Total housing units	376	1,168	408,584

Occupancy Profile

Who is inside and how they use it

Homeownership

77.7% owners

Renter-occupied 22.3%

Owner-occupied 77.7%

homeownership rate

Woonsocket 77.7%

Sanborn County 78.6%

South Dakota 68.6%

Average household size

2.33

Owner-occupied

1.58

Renter-occupied

owner-occupied average size

Woonsocket 2.33

Sanborn County 2.38

South Dakota 2.54

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Woonsocket	Sanborn County	South Dakota
Total occupied units	328	946	365,544
Year moved in
2020 or later	15.9%	13.6%	25.4%
2010 to 2019	35.7%	31.1%	39.7%
2000 to 2009	30.8%	22.2%	16.2%
1999 or earlier	17.6%	33%	18.7%
Occupants per room
1.00 or fewer	100%	99.3%	97.7%
1.01 to 1.50	0%	0.4%	1.6%
1.51 or more	0%	0.3%	0.7%
Vehicles availability
No vehicles	11.6%	7%	5.2%
1 vehicle	18%	15.2%	28.4%
2 vehicles	44.5%	35%	36.3%
3 or more vehicles	25.9%	42.8%	30.1%
House heating fuel used
Gas	60%	59.6%	63.1%
Electricity	36.6%	33.5%	32.4%
Solar	0%	0%	0%
Fuel oil, kerosene etc	3%	3.4%	1.3%
All other fuels	0.3%	3.5%	2.4%
No fuel used	0%	0%	0.8%
Selected characteristics
Lacking complete plumbing	4%	1.6%	0.5%
Lacking complete kitchen	0%	1.5%	0.9%
No telephone service available	0%	0.4%	1.1%

Housing Value

What owner-occupied units are worth

Median home value

$80,800

owner-occupied units

Median value(USD)

Woonsocket

$80,800

Sanborn County

$135,600

South Dakota

$257,400

Housing Cost Burden

19.7%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

19.7%

Owners without a mortgage

6.8%

Renters

59.7%

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

	Woonsocket	Sanborn County	South Dakota
Property value
Median Value	$80,800	$135,600	$257,400
Under $100,000	64%	37.9%	16.1%
$100,000 - $200,000	26.3%	30%	19.5%
$200,000 - $300,000	3.9%	12.9%	24.4%
$300,000 - $500,000	5.9%	12.8%	26%
$500,000 - $1,000,000	0%	3.2%	12.1%
$1,000,000 and more	0%	3.2%	1.8%
Owner-occupied households
With a mortgage	47.8%	36%	54.5%
Without a mortgage	52.2%	64%	45.5%
Median monthly owner costs
With a mortgage	$1,075	$1,298	$1,680
Without a mortgage	$517	$635	$617
Gross rent
Median rent	$664	$725	$946

Education Profile

How educated is the community and how education pays off

Adults with a college degree

13.2%

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

Woonsocket 13.2%

Sanborn County 21.3%

South Dakota 31.9%

Adults without a high school diploma

16.7%

of adults (25+) without a high school diploma

Woonsocket 16.7%

Sanborn County 11.1%

South Dakota 6.8%

School Enrollment

Who is enrolled in school and at what level

School enrollment

158

population (age 3+) enrolled in school

Nursery / Preschool

K–12

89.9%

College / Undergraduate

1.9%

Graduate / Professional

1.3%

College-going rate (18-24 yr olds)

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

Woonsocket

Sanborn County

31.9%

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

	Woonsocket	Sanborn County	South Dakota
Total enrolled (age 3+)	158	552	216,085
Nursery / preschool	7%	6.2%	6.1%
K–12	89.9%	77.7%	73%
Kindergarten	5.1%	6.2%	5.6%
Elementary: Grades 1–4	25.3%	27%	22.3%
Elementary: Grades 5–8	20.9%	18.3%	22.8%
High School: Grades 9–12	38.6%	26.3%	22.3%
College or graduate school	3.2%	16.1%	20.9%
College, undergraduate	1.9%	12.1%	17.1%
Graduate, professional school	1.3%	4%	3.8%
College-going rate · 18-24 yr olds	0%	31.9%	35.1%
School type
Public school	97.5%	97.1%	86.9%
Private school	2.5%	2.9%	13.1%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

508

population 25 years and over

Total adults (25+)

Less than 9th grade

0.6%

9th-12th, no diploma

16.1%

HS graduate

45.7%

Some college no degree

17.5%

Associates degree

6.9%

Bachelors degree

9.3%

Graduate or professional degree

3.9%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

0% · 100%

9th-12th, no diploma

75.6% · 24.4%

HS graduate

51.3% · 48.7%

Some college no degree

58.4% · 41.6%

Associates degree

25.7% · 74.3%

Bachelors degree

23.4% · 76.6%

Graduate or professional degree

10% · 90%

Educational Attainment Overview

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

Highest credential completed · adults 25+

	Woonsocket	Sanborn County	South Dakota
Population (25+)	508	1,606	603,746
Less than 9th grade	0.6%	2.8%	2.6%
9th–12th, no diploma	16.1%	8.3%	4.2%
High school diploma or GED	45.7%	37.4%	29%
Some college, no degree	17.5%	17.1%	19.9%
Associate's degree	6.9%	13.2%	12.3%
Bachelor's degree or higher	13.2%	21.3%	31.9%
Bachelor's degree	9.3%	14.6%	21.9%
Graduate or professional	3.9%	6.7%	10%
High School or higher	83.3%	88.9%	93.2%

Earnings by education level

percentage as applicable

Median Earnings

$43,869

Median earnings for adults 25+, by level

Less than HS graduate

$—

HS graduate

$46,250

Some college or associates

$46,875

Bachelors degree

$48,333

Graduate or professional degree

$63,750

Poverty Rate

for ages 25+, with bachelors degree or higher

Less than HS graduate

21.8%

HS graduate

9.8%

Some college or associates

3.6%

Bachelors degree or higher

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Woonsocket	Sanborn County	South Dakota
Median earnings
Population 25+, with earnings	$43,869	$44,750	$49,402
Less than high school graduate	$—	$34,531	$33,790
High school graduate (includes equivalency)	$46,250	$39,688	$40,544
Some college or associate's degree	$46,875	$48,319	$47,061
Bachelor's degree	$48,333	$41,842	$58,363
Graduate or professional degree	$63,750	$65,000	$72,377
Poverty rates
Less than high school graduate	21.8%	17%	28%
High school graduate (includes equivalency)	9.8%	12.7%	13.2%
Some college or associate's degree	3.6%	4.9%	8.5%
Bachelor's degree or higher	0%	4.4%	4.2%

Insights for Woonsocket, 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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