Marshall County, IA demographics:
population, income, and more

Total population
40,114
0.4% year-over-year change
Median household income
$73,315/yr
0.7% year-over-year change
Housing units
16,937
0.5% year-over-year change

Marshall County population

How many people live in Marshall County

Marshall County is home to 40,114 residents, according to the most recent Census data. Gender-wise, 50.7% of Marshall County locals are male, and 49.3% are female.

Total population
40,114
0.4% year-over-year change
Gender ratio
Male
50.7%
20,329
Female
49.3%
19,785
Value Percent YoY change
Male 20,329 50.7% 0.1%
Female 19,785 49.3% 0.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Marshall County is 38, with the population distributed as follows: about 20.5% are children under 15, then 13.4% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.8% of the population, while another 24.1% fall into the 45 to 64 bracket. Finally, around 18.2% are 65 or older.

Median age
38.5
Age breakdown
Under 15
20.5%
15 to 24
13.4%
25 to 44
23.8%
45 to 64
24.1%
Over 65
18.2%
Value Percent YoY change
Under 15 8,234 20.5% -0.4%
15 to 24 5,379 13.4% 3.8%
25 to 44 9,550 23.8% 2.2%
45 to 64 9,650 24.1% -1.5%
Over 65 7,301 18.2% -1.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Marshall County, 84.2% of the population are US-born citizens, while 6.5% have gained naturalized citizenship. At the same time, 9.4% of residents are non-citizens. As for race, 70.6% of locals are Caucasian, 2% are African American and 4.1% have Asian roots. There’s also a share of 13.7% that includes residents with two or more races.

Citizenship
U.S.-born citizens
84.2%
Non-U.S.-born citizens
6.5%
Non-citizens
9.4%
Value Percent YoY change
U.S.-born citizens 33,759 84.2% 0.2%
Non-U.S.-born citizens 2,590 6.5% -7.5%
Non-citizens 3,765 9.4% 8.0%
Racial breakdown
White
70.6%
Black or African American
2%
American Indian and Alaska Native
1.3%
Asian
4.1%
Native Hawaiian and other Pacific Islander
0%
Two or more races
13.7%
Other
8.2%
Value Percent
White 28,330 70.6%
Black or African American 824 2%
American Indian and Alaska Native 506 1.3%
Asian 1,652 4.1%
Two or more races 5,513 13.7%
Other 3,289 8.2%

Households in Marshall County

A peek inside Marshall County households

Marshall County has 15,496 households, with an average of 3 members in each. Of these, 63.2% are families, while the remaining 36.8% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
15,496
-0.3% year-over-year change
Average people per household
3
Non-family households
5,695
Family households
9,801
Value Percent YoY change
Non-family households 5,695 36.8% 3.1%
Family households 9,801 63.2% -2.2%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Marshall County

The housing landscape of Marshall County

Marshall County's housing consists of 16,937 units, with 79.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 2.2% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 2.7% of the housing landscape.

Housing units
16,937
0.5% year-over-year change
Housing types
Value Percent
1 unit, detached 13,417 79.2%
1 unit, attached 366 2.2%
2 units 501 3%
3 or 4 units 628 3.7%
5 to 9 units 589 3.5%
10 to 19 units 338 2%
20 to 49 units 298 1.8%
50 or more units 339 2%
Mobile home 455 2.7%
Boat, RV, van, etc. 6 0%
Homes built since 2020
200
92.3% year-over-year change

The age of buildings in Marshall County

In Marshall County, the median construction year is 1958. About 31.4% of homes were built before the 1940s, with another 6.2% going up by 1949. Most development happened in the second half of the 20th century. Then, 6.3% of homes were added from 2000 to 2009, 3.3% between 2010 and 2019, and 1.2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 5,325 31.4% -1.6%
Built between 1940 and 1949 1,058 6.2% 2.3%
Built between 1950 and 1959 2,666 15.7% 6.3%
Built between 1960 and 1969 1,715 10.1% -9.8%
Built between 1970 and 1979 2,380 14% 5.9%
Built between 1980 and 1989 867 5.1% -7.0%
Built between 1990 and 1999 1,102 6.5% -1.1%
Built between 2000 and 2009 1,062 6.3% -2.2%
Built between 2010 and 2019 562 3.3% 7.2%
Built in 2020 or later 200 1.2% 92.3%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Marshall County occupancy rates

Out of the 15,496 occupied housing units in Marshall County, 75% are owner-occupied, while 25% are lived in by tenants. Meanwhile, 8.5% of all homes on the local market sit vacant.

Occupied housing units
15,496
-0.3% year-over-year change
Occupancy breakdown
Renter occupied
3,874
Owner occupied
11,622
Value Percent YoY
change
Renter occupied 3,874 25% -6.6%
Owner occupied 11,622 75% 1.9%
Unoccupied housing units
8.5%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Marshall County housing costs

Housing costs in Marshall County come to a median of $932 per month, while tenants specifically pay a median gross rent of $885.

Median housing costs per month
$932/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Marshall County
$885/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Marshall County

Marshall County education at a glance

About 41.3% of the population in Marshall County went to high school, while 19.5% pursued college studies. Another 10.8% earned an associate degree and 14.7% hold a bachelor’s. Meanwhile, 6.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 2,122 7.1% 4.7%
High school diploma 12,374 41.3% -0.8%
College diploma 5,846 19.5% -1.0%
Associate degree 3,217 10.8% -3.8%
Bachelor's degree 4,413 14.7% 2.9%
Graduate degree 1,967 6.6% 8.4%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Marshall County

How much people earn in Marshall County

The average annual household income in Marshall County was $85,510 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +1.1% change from the previous year. At the same time, the median income stood at $73,315, reflecting a +0.7% shift over the same period.

Average household income in Marshall County
$85,510/year
1.1% year-over-year change
Median household income in Marshall County
$73,315/year
0.7% year-over-year change

Marshall County income by age

In Marshall County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $80,000. Those with someone between 45 and 64 in charge, often well established professionally, earn $89,290 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $68,115, while those led by someone over 65, many of whom may be retired, have about $51,189 in earnings. Overall, 88.9% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $68,115 14.7%
25 - 44 $80,000 6.3%
45 - 64 $89,290 -3.9%
Over 65 $51,189 0.1%
Above poverty level
34,099
Below poverty level
4,239
Value Percent YoY
change
Above poverty level 34,099 88.9% 0.3%
Below poverty level 4,239 11.1% 1.1%

Employment in Marshall County

Workforce and job types in Marshall County

The job market in Marshall County is powered by 19,912 working residents, spread across a range of industries and roles. 63.2% of the working population are employed in professional or administrative positions, while 36.8% are in hands-on or service-based jobs. Also, 9.1% run their own businesses, 70.4% are employed by private companies, and 14.4% work in the public sector.

Workforce demographics

Working population
19,912
0.5% year-over-year change
White collar
12,583
Blue collar
7,329
Value Percent YoY change
White collar 12,583 63.2% -0.3%
Blue collar 7,329 36.8% 2.0%
Employer type
Self employees
9.1%
Private companies
70.4%
Governmental workers
14.4%
Not for profit companies
6.1%
Value Percent YoY change
Self employees 1,813 9.1% 6.5%
Private companies 14,025 70.4% -1.0%
Governmental workers 2,867 14.4% 3.2%
Not for profit companies 1,207 6.1% 3.3%
Unemployment rate
4.3%
6.7% year-over-year change

Available workforce

The unemployment rate in Marshall County stands at 4.3%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Marshall County

How people get around in Marshall County

In Marshall County, the average commute time is 20 minutes. Commuting methods vary: 89.4% of residents travel by personal vehicle and 2.9% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
20 min
Means of transportation
Value Percent YoY change
Car 17,475 89.4% 0.3%
Taxicab 25 0.1% 8.7%
Motorcycle 16 0.1% 6.7%
Bicycle 25 0.1% -19.4%
Walk 566 2.9% 0.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Marshall County by zipcode?

Zipcode Population Number of households Median income Average income
50005 812 333 $76,696 $73,563
50051 224 108 $60,000 $76,112
50078 85 40 $52,500 $55,228
50106 1,163 473 $101,193 $124,611
50120 428 157 $142,662 $114,352
50141 587 248 $77,500 $86,554
50142 720 338 $76,250 $82,846
50148 406 164 $84,083 $99,629
50158 31,396 11,788 $70,367 $82,499
50162 1,164 517 $71,417 $93,969

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FAQs about Marshall County demographics 

What is the total population of Marshall County?

Marshall County has a total population of 40,114 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.4% compared to a year ago.

What is the gender ratio in Marshall County?

The gender ratio in Marshall County is as follows:
  • 50.7% males (20,329 residents)
  • 49.3% females (19,785 residents)

What is the median age in Marshall County?

The median age in Marshall County is 38.5.

What is the age distribution of the population in Marshall County?

The age distribution in Marshall County is as follows:
  • Under 15: 20.5% (8,234 residents)
  • Ages 15-24: 13.4% (5,379 residents)
  • Ages 25-44: 23.8% (9,550 residents)
  • Ages 45-64: 24.1% (9,650 residents)
  • Over 65: 18.2% (7,301 residents)

What is the racial and ethnic makeup of Marshall County?

The racial and ethnic makeup of Marshall County is as follows:
  • White: 70.6% (28,330 residents)
  • Black or African American: 2% (824 residents)
  • American Indian and Alaska Native: 1.3% (506 residents)
  • Asian: 4.1% (1,652 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 13.7% (5,513 residents)
  • Other: 8.2% (3,289 residents)

What percentage of the population in Marshall County are U.S.-born citizens?

U.S.-born citizens represent 84.2% of the population in Marshall County.

How many housing units are there in Marshall County?

There are 16,937 housing units in Marshall County, reflecting a +0.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Marshall County and what is the average household size?

Marshall County has a total of 15,496 households, with an average of 3 people in each.

What is the median household income in Marshall County?

Marshall County has a median household income of $73,315, representing a +0.7% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Marshall County?

The employment rate is 95.7% in Marshall County, with a workforce of 19,912 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 63.2% (12,583 residents)
  • Blue-collar workers: 36.8% (7,329 residents)

Places of employment:
  • Self-employed: 9.1% (1,813 residents)
  • Private companies: 70.4% (14,025 residents)
  • Governmental workers: 14.4% (2,867 residents)
  • Not-for-profit companies: 6.1% (1,207 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025