Marshall County, Iowa Population 2024

40,207

Marshall County, Iowa's estimated 2024 population is 40,207 with a growth rate of 0.48% in the past year according to the most recent United States census data. Marshall County, Iowa is the 15th largest county in Iowa. The 2010 population was 40,722 and has seen a growth of -1.26% since that time.

Note: data after 2022 is projected based on recent change

35 Rows

Year
Population
Growth
Change
202941,1721930.47%
202840,9791930.47%
202740,7861930.48%
202640,5931930.48%
202540,4001930.48%
202440,2071930.48%
202340,0141930.48%
202239,821-92-0.23%
202139,913-183-0.46%
202040,0966241.58%
201939,472-407-1.02%
201839,879-172-0.43%
201740,051-71-0.18%
201640,122-218-0.54%
201540,340-372-0.91%
201440,712-281-0.69%
201340,993-39-0.1%
201241,032190.05%
201141,0132910.71%
201040,72200%
199038,276-3,376-8.11%
198041,6525761.4%
197041,0763,0928.14%
196037,9842,3736.66%
195035,6112050.58%
194035,4061,6794.98%
193033,7271,0973.36%
192032,6302,3517.76%
191030,2792880.96%
190029,9914,14916.06%
189025,8422,0908.8%
188023,7526,17635.14%
187017,57611,561192.2%
18606,0155,6771679.59%
1850338-40,834-99.18%
2024 Growth Rate
0.48% (193)
County Website
Marshall County
State
Iowa
County Seat
Marshalltown
2020 Population
40,096
Area
573 mi²
Density
70 people/mi²
Growth Since 2020
0.28% (111)
Founded
1846

Population by Race

Race
Population
Percentage (of total)
White31,42278.46%
Two or more races3,4748.67%
Other race2,3265.81%
Asian1,6914.22%
Black or African American8442.11%
Native American2920.73%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Other race

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Marshall County, Iowa Population by Race

Marshall County, Iowa Population Pyramid 2024

Marshall County, Iowa Median Age

38.5

Total

37.6

Male

39.8

Female

Marshall County, Iowa Adults

There are 29,886 adults, (7,098 of whom are seniors) in Marshall County, Iowa.

Marshall County, Iowa Age Dependency

75.7

Age Dependency Ratio

31.1

Old Age Dependency Ratio

44.6

Child Dependency Ratio

Marshall County, Iowa Sex Ratio

Female19,74749.31%
Male20,30250.69%

Marshall County, Iowa Population by Age

Marshall County, Iowa Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All15,2882.5273.526.5
Married8,0623.2386.613.4
Non Family5,3651.2156.843.2
Female1,1513.0259.640.4
Male7103.5873.426.6

3.16

Average Family Size

2.52

Average Household Size

73.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Marshall County, Iowa Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade1,5035.68%
Associates Degree2,96911.23%
Bachelors Degree3,93814.89%
Graduate Degree1,6176.12%
High School Graduate8,85733.5%
Less Than 9th Grade2,4129.12%
Some College5,14519.46%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Marshall County, Iowa Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White20,00819,0094,756
Hispanic4,5142,222469
2+ Races1,6061,150381
Other Race1,227512206
Asian987464151
Black47441918
Native American1156012

The highest rate of high school graduation is among white people with a rate of 95.01%.

The highest rate of bachelors degrees is among white people with a rate of 23.77%.

Marshall County, Iowa Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$63,228$80,981$42,276
Graduate Degree$73,368$78,103$70,982
High School Graduate$40,564$47,189$33,363
Less Than 9th Grade$39,458$42,214$32,857
Overall$43,763$53,048$36,067
Some College$41,606$55,517$34,965

$43,763

Average Earnings

$53,048

Average Male

$36,067

Average Female

Marshall County, Iowa Earnings by Educational Attainment

Marshall County, Iowa Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Marshall County, Iowa Language

76.12% of Marshall County, Iowa residents speak only English, while 23.88% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 19.18% of the population.

Marshall County, Iowa Language

Marshall County, Iowa Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White25,5152,2168.69%
Hispanic9,6451,82418.91%
Multiple3,41775522.1%
Other2,32647020.21%
Black767466%
Asian1,691432.54%
Native2842910.21%

11.17%

Overall Poverty Rate

9.64%

Male Poverty Rate

12.69%

Female Poverty Rate

Poverty in Marshall County, Iowa

The race most likely to be in poverty in Marshall County, Iowa is Multiple, with 22.1% below the poverty level.

The race least likely to be in poverty in Marshall County, Iowa is Asian, with 2.54% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.99%. Among those working part-time, it was 13.2%, and for those that did not work, the poverty rate was 18.41%.

Marshall County, Iowa Poverty

rate

Rate
Poverty
Less Than 9th Grade15.38%
High School12.56%
Some College7.98%
Bachelors or Greater5.28%

Marshall County, Iowa Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed31.34%
Male Unemployed30.28%
Female Employed7.5%
Male Employed4.32%

Marshall County, Iowa Poverty Rate by Employment Status and Sex

Marshall County, Iowa Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$85,665$95,696
Households$70,828$82,035
Married Families$93,265$104,461
Non Families$42,798$53,345

mean

median

Income by Household Type

Marshall County, Iowa Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

54.1%

Overall Marriage Rate

51.5%

Male Marriage Rate

56.8%

Female Marriage Rate

Marshall County, Iowa Married by Age and Sex

male

female

Marshall County, Iowa Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 45-54.

Marshall County, Iowa Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Marshall County, Iowa Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

2,868

Number of Veterans

2,692

Male Veterans

176

Female Veterans

War
Veterans
Vietnam1,042
First Gulf War414
Second Gulf War406
Korea216
World War II133

Marshall County, Iowa Veterans by War

count

Age Group
Veterans
75+879
65 to 74853
35 to 54499
55 to 64471
18 to 34166

Marshall County, Iowa Veterans by Age

count

Name
Veterans
% of Total
White2,6220.10657236922326546
2+ Races1170.05657640232108317
Hispanic880.015047879616963064
Black800.1436265709156194
Asian350.03141831238779174
Native American140.12173913043478261

Marshall County, Iowa Veterans by Race

Marshall County, Iowa Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

6.31%

Veteran Poverty Rate

30.05%

Veteran Disability Rate

Marshall County, Iowa Veterans by Education

LaborForceParticipation

66.8%

Labor Force Participation

63.1%

Employment Rate

5.6%

Unemployment Rate

Marshall County, Iowa Employment by Age

LaborForceParticipation

Marshall County, Iowa Employment by Race

LaborForceParticipation

Marshall 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

66.23%

Born in Marshall County, Iowa

86.33%

Native Born

13.67%

Foreign Born

8.61%

Non Citizen

5.06%

Naturalized

Place of Birth

86.33% of Marshall County, Iowa residents were born in the United States, with 66.23% having been born in Iowa. 8.61% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Marshall County, Iowa Place of Birth

Sources