Sioux County, Iowa Population 2024

36,365

Sioux County, Iowa's estimated 2024 population is 36,365 with a growth rate of 0.33% in the past year according to the most recent United States census data. Sioux County, Iowa is the 18th largest county in Iowa. The 2010 population was 33,755 and has seen a growth of 7.73% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202936,9601190.32%
202836,8411190.32%
202736,7221190.33%
202636,6031190.33%
202536,4841190.33%
202436,3651190.33%
202336,2461190.33%
202236,1271680.47%
202135,959740.21%
202035,8859352.68%
201934,9501830.53%
201834,767-17-0.05%
201734,784-171-0.49%
201634,9551910.55%
201534,7641160.33%
201434,6481370.4%
201334,5112220.65%
201234,2892670.78%
201134,0222670.79%
201033,75500%
199029,903-910-2.95%
198030,8132,81710.06%
197027,9961,6216.15%
196026,375-6-0.02%
195026,381-828-3.04%
194027,2094031.5%
193026,8063481.32%
192026,4581,2104.79%
191025,2481,9118.19%
190023,3374,96727.04%
189018,37012,944238.56%
18805,4264,850842.01%
18705765665660%
186010-36,950-99.97%
2024 Growth Rate
0.33% (119)
County Website
Sioux County
State
Iowa
County Seat
Orange City
2020 Population
35,885
Area
768 mi²
Density
47 people/mi²
Growth Since 2020
1.34% (480)
Founded
1851

Population by Race

Race
Population
Percentage (of total)
White31,59487.8%
Two or more races2,0605.72%
Other race1,7944.99%
Asian2150.6%
Black or African American2120.59%
Native American1070.3%
Native Hawaiian or Pacific Islander20.01%

White

Two or more races

Other race

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Sioux County, Iowa Population by Race

Sioux County, Iowa Population Pyramid 2024

Sioux County, Iowa Median Age

34

Total

33.4

Male

34.5

Female

Sioux County, Iowa Adults

There are 26,110 adults, (5,727 of whom are seniors) in Sioux County, Iowa.

Sioux County, Iowa Age Dependency

76.5

Age Dependency Ratio

28.1

Old Age Dependency Ratio

48.4

Child Dependency Ratio

Sioux County, Iowa Sex Ratio

Female17,93249.83%
Male18,05250.17%

Sioux County, Iowa Population by Age

Sioux County, Iowa Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All12,5762.6877.822.2
Married8,5553.2687.912.1
Non Family3,2101.1153.146.9
Female5412.7661.438.6
Male2702.9784.415.6

3.17

Average Family Size

2.68

Average Household Size

77.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Sioux County, Iowa Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade9524.46%
Associates Degree3,18414.92%
Bachelors Degree4,58021.46%
Graduate Degree1,9058.93%
High School Graduate5,88827.59%
Less Than 9th Grade1,0504.92%
Some College3,78217.72%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Sioux County, Iowa Educational Attainment by Sex (over 25)

Sioux County, Iowa Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White18,80717,9076,244
Hispanic2,1061,013154
2+ Races96368076
Other Race82728168
Asian12612646
Native American92680
Black878730
Islander220

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

The highest rate of bachelors degrees is among asian people with a rate of 36.51%.

Sioux County, Iowa Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$54,870$80,489$44,458
Graduate Degree$69,178$70,042$68,724
High School Graduate$44,545$54,204$29,523
Less Than 9th Grade$36,318$37,034$29,844
Overall$48,518$58,306$35,587
Some College$43,952$58,636$30,000

$48,518

Average Earnings

$58,306

Average Male

$35,587

Average Female

Sioux County, Iowa Earnings by Educational Attainment

Sioux County, Iowa Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Sioux County, Iowa Language

89.57% of Sioux County, Iowa residents speak only English, while 10.43% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 9.16% of the population.

Sioux County, Iowa Language

Sioux County, Iowa Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White28,0601,6345.82%
Hispanic4,91749810.13%
Other1,7831789.98%
Multiple1,994261.3%
Asian167158.98%

6.43%

Overall Poverty Rate

5.88%

Male Poverty Rate

7%

Female Poverty Rate

Poverty in Sioux County, Iowa

The race most likely to be in poverty in Sioux County, Iowa is Hispanic, with 10.13% below the poverty level.

The race least likely to be in poverty in Sioux County, Iowa is Multiple, with 1.3% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.46%. Among those working part-time, it was 10.42%, and for those that did not work, the poverty rate was 14.92%.

Sioux County, Iowa Poverty

rate

Rate
Poverty
Less Than 9th Grade12.82%
High School6.74%
Some College4.28%
Bachelors or Greater3.54%

Sioux County, Iowa Poverty Rate by Education

rate

Rate
Poverty
Male Unemployed27.78%
Female Unemployed15.58%
Female Employed3.24%
Male Employed2.66%

Sioux County, Iowa Poverty Rate by Employment Status and Sex

Sioux County, Iowa Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$101,452$121,125
Households$84,736$104,234
Married Families$106,941$-999,999,999
Non Families$36,688$49,271

mean

median

Income by Household Type

Sioux County, Iowa Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

63.2%

Overall Marriage Rate

63.8%

Male Marriage Rate

62.7%

Female Marriage Rate

Sioux County, Iowa Married by Age and Sex

male

female

Sioux County, Iowa 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 35-44.

Sioux County, Iowa Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Sioux County, Iowa Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,119

Number of Veterans

1,083

Male Veterans

36

Female Veterans

War
Veterans
Vietnam528
Second Gulf War205
First Gulf War192
Korea75
World War II0

Sioux County, Iowa Veterans by War

count

Age Group
Veterans
75+394
65 to 74325
35 to 54173
18 to 34134
55 to 6493

Sioux County, Iowa Veterans by Age

count

Name
Veterans
% of Total
White1,0784.62%
Other Race393.45%
Hispanic321.18%
2+ Races20.17%

Sioux County, Iowa Veterans by Race

Sioux County, Iowa Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

9.91%

Veteran Poverty Rate

27.61%

Veteran Disability Rate

Sioux County, Iowa Veterans by Education

LaborForceParticipation

71.5%

Labor Force Participation

70%

Employment Rate

2%

Unemployment Rate

Sioux County, Iowa Employment by Age

LaborForceParticipation

Sioux County, Iowa Employment by Race

LaborForceParticipation

Sioux County, Iowa 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

66.71%

Born in Sioux County, Iowa

92.44%

Native Born

7.56%

Foreign Born

4.59%

Non Citizen

2.98%

Naturalized

Place of Birth

92.44% of Sioux County, Iowa residents were born in the United States, with 66.71% having been born in Iowa. 4.59% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Sioux County, Iowa Place of Birth

Sources