Dewey County, South Dakota Population 2024

5,274

Dewey County, South Dakota's estimated 2024 population is 5,274 with a growth rate of 1.27% in the past year according to the most recent United States census data. Dewey County, South Dakota is the 34th largest county in South Dakota. The 2010 population was 5,325 and has seen a growth of -0.96% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
20295,604661.19%
20285,538661.21%
20275,472661.22%
20265,406661.24%
20255,340661.25%
20245,274661.27%
20235,208661.28%
20225,142-81-1.55%
20215,223-2-0.04%
20205,225-647-11.02%
20195,872-32-0.54%
20185,904500.85%
20175,854671.16%
20165,787851.49%
20155,702360.64%
20145,666821.47%
20135,584520.94%
20125,5321362.52%
20115,396711.33%
20105,32500%
19905,5231572.93%
19805,3661963.79%
19705,170-87-1.65%
19605,2573416.94%
19504,916-793-13.89%
19405,709-767-11.84%
19306,4761,67434.86%
19204,8023,657319.39%
19101,1451,0992389.13%
188046-5,558-99.18%
2024 Growth Rate
1.27% (66)
2020 Population
5,225
Area
2302 mi²
Density
2 people/mi²
Growth Since 2020
0.94% (49)
Founded
1910

Population by Race

Race
Population
Percentage (of total)
Native American3,92074.95%
White1,05620.19%
Two or more races1973.77%
Native Hawaiian or Pacific Islander310.59%
Black or African American210.4%
Asian30.06%
Other race20.04%

Native American

White

Two or more races

Native Hawaiian or Pacific Islander

Black or African American

Asian

Other race

Dewey County, South Dakota Population by Race

Dewey County, South Dakota Population Pyramid 2024

Dewey County, South Dakota Median Age

27.6

Total

25.9

Male

28.6

Female

Dewey County, South Dakota Adults

There are 3,262 adults, (518 of whom are seniors) in Dewey County, South Dakota.

Dewey County, South Dakota Age Dependency

90.6

Age Dependency Ratio

18.9

Old Age Dependency Ratio

71.7

Child Dependency Ratio

Dewey County, South Dakota Sex Ratio

Female2,62650.21%
Male2,60449.79%

Dewey County, South Dakota Population by Age

Dewey County, South Dakota Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All1,6813.0761.538.5
Married6133.8482.417.6
Non Family5101.1955.944.1
Female3753.6338.961.1
Male1834.565347

3.73

Average Family Size

3.07

Average Household Size

61.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Dewey County, South Dakota Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade30911.06%
Associates Degree29410.52%
Bachelors Degree32611.67%
Graduate Degree1575.62%
High School Graduate1,11439.87%
Less Than 9th Grade582.08%
Some College53619.18%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Dewey County, South Dakota Educational Attainment by Sex (over 25)

Dewey County, South Dakota Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
Native American1,8851,575219
White776735234
2+ Races998315
Hispanic55310
Black21217
Islander888
Asian330
Other Race220

The highest rate of high school graduation is among black people with a rate of 100%.

The highest rate of bachelors degrees is among islander people with a rate of 100%.

Dewey County, South Dakota Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$56,080$57,222$55,288
Graduate Degree$66,875$91,250$65,313
High School Graduate$32,045$36,136$28,802
Less Than 9th Grade$30,714$31,250$0
Overall$37,557$39,042$35,784
Some College$38,018$49,250$33,636

$37,557

Average Earnings

$39,042

Average Male

$35,784

Average Female

Dewey County, South Dakota Earnings by Educational Attainment

Dewey County, South Dakota Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Dewey County, South Dakota Language

92.2% of Dewey County, South Dakota residents speak only English, while 7.8% speak other languages. The non-English language spoken by the largest group is Other languages, which is spoken by 7.31% of the population.

Dewey County, South Dakota Language

Dewey County, South Dakota Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
Native3,8691,61441.72%
White1,035424.06%
Hispanic4848.33%
Asian33100%
Multiple18821.06%

32.32%

Overall Poverty Rate

33.48%

Male Poverty Rate

31.19%

Female Poverty Rate

Poverty in Dewey County, South Dakota

The race most likely to be in poverty in Dewey County, South Dakota is Asian, with 100% below the poverty level.

The race least likely to be in poverty in Dewey County, South Dakota is Multiple, with 1.06% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.11%. Among those working part-time, it was 36.02%, and for those that did not work, the poverty rate was 52.53%.

Dewey County, South Dakota Poverty

rate

Rate
Poverty
Less Than 9th Grade53.95%
High School33.49%
Some College16.44%
Bachelors or Greater9.32%

Dewey County, South Dakota Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed74.64%
Male Unemployed62.56%
Male Employed12%
Female Employed8.07%

Dewey County, South Dakota Poverty Rate by Employment Status and Sex

Dewey County, South Dakota Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$62,837$75,998
Households$57,928$69,239
Married Families$95,382$-999,999,999
Non Families$34,313$46,350

mean

median

Income by Household Type

Dewey County, South Dakota Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

36.7%

Overall Marriage Rate

36.2%

Male Marriage Rate

37.1%

Female Marriage Rate

Dewey County, South Dakota Married by Age and Sex

male

female

Dewey County, South Dakota Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Dewey County, South Dakota Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Dewey County, South Dakota Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

148

Number of Veterans

135

Male Veterans

13

Female Veterans

War
Veterans
Vietnam71
First Gulf War41
Second Gulf War9
Korea3
World War II0

Dewey County, South Dakota Veterans by War

count

Age Group
Veterans
65 to 7448
35 to 5443
75+33
55 to 6424
18 to 340

Dewey County, South Dakota Veterans by Age

count

Name
Veterans
% of Total
Native American1094.8%
White374.49%
2+ Races21.96%
Hispanic23.64%

Dewey County, South Dakota Veterans by Race

Dewey County, South Dakota Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

17.57%

Veteran Poverty Rate

37.16%

Veteran Disability Rate

Dewey County, South Dakota Veterans by Education

LaborForceParticipation

66.9%

Labor Force Participation

56.4%

Employment Rate

14.6%

Unemployment Rate

Dewey County, South Dakota Employment by Age

LaborForceParticipation

Dewey County, South Dakota Employment by Race

LaborForceParticipation

Dewey County, South Dakota Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

86.96%

Born in Dewey County, South Dakota

99.6%

Native Born

0.4%

Foreign Born

0.36%

Non Citizen

0.04%

Naturalized

Place of Birth

99.6% of Dewey County, South Dakota residents were born in the United States, with 86.96% having been born in South Dakota. 0.36% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Dewey County, South Dakota Place of Birth

Sources