Marshalltown, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Marshalltown, Iowa is 27,491 as of the 2023 American Community Survey, making it the 16th-largest city in Iowa. The median household income is $68,854, the median home value is $117,100, and the median age is 35.7.
The population has grown 1.0% since 2010 (27,604 → 27,886).
27,491
Population
1432
People / sq mi
$68,854
Median Income
$117,100
Median Home Value
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Marshalltown covers 19.2 sq mi of land at 1432 people per square mile.
About Marshalltown, IA
Housing cost is the defining feature of Marshalltown: the median home is valued at $117,100. Marshalltown is a city in Iowa with a population of 27,491. It ranks #16 among cities in Iowa by population.
Household earnings are middling, with a median of $68,854 — below the US median of $78,538. About 10.4% of residents live below the federal poverty level, below the national 12.4%. Home prices sit near the bottom of the range at $117,100, with typical rent around $864.
College attainment is 19.7%, below the national 35.0%. Most workers commute: only 6.0% work from home, below the national 14.0%, and the average commute runs about 17 minutes each way.
Marshalltown city Population History (2010-2024)
The city of Marshalltown city had a population of 27,604 in 2010 and 27,886 in 2024, a 1.0% growth over 14 years. The peak was 27,886 in 2024. Average annual growth rate: 0.08%.
27,886
Population (2024)
27,604
Population (2010)
27,886
Peak (2024)
0.08%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 27,604 |
| 2011 | 27,776 |
| 2012 | 27,823 |
| 2013 | 27,823 |
| 2014 | 27,609 |
| 2015 | 27,347 |
| 2016 | 27,177 |
| 2017 | 27,124 |
| 2018 | 26,984 |
| 2019 | 26,666 |
| 2020 | 27,578 |
| 2021 | 27,461 |
| 2022 | 27,491 |
| 2023 | 27,737 |
| 2024 | 27,886 |
Race & Ethnicity
| White | 66.1% |
| Black or African American | 2.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.4% |
| Two or More Races | 0.0% |
Economy & Income
$68,854
Median Household Income
$29,271
Per Capita Income
10.4%
Poverty Rate
3.0%
Unemployment Rate
Housing
$117,100
Median Home Value
$864
Median Rent
66.9%
Owner-Occupied
Education
82.1%
High School+
19.7%
Bachelor's+
Commute
0.0%
Drive Alone
74.9%
Public Transit
6.0%
Work From Home
17.4 min
Avg Commute
Community Profile
19.4%
Foreign Born
66.7%
Non-English at Home
9.4%
Veterans
13.3%
With Disability
94.2%
Health Insurance
92.6%
Internet Access
Employment by Industry
| Manufacturing | 27.2% |
| Professional, Scientific & Management | 23.1% |
| Construction | 7.8% |
| Finance, Insurance & Real Estate | 7.5% |
| Education, Health Care & Social Services | 5.0% |
| Arts, Entertainment & Food Services | 4.0% |
| Information | 3.6% |
| Retail Trade | 3.1% |
| Public Administration | 1.9% |
| Agriculture & Mining | 1.9% |
| Transportation & Warehousing | 1.0% |
Largest cities in Iowa
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City rankings
Frequently Asked Questions
Marshalltown, Iowa has a population of 27,491 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 16th-largest city in Iowa.
The median household income in Marshalltown, Iowa is $68,854, with 10.4% of residents living below the federal poverty level.
The median home value in Marshalltown, Iowa is $117,100, with median monthly rent at $864 and a homeownership rate of 66.9%.
The median age in Marshalltown, Iowa is 35.7 years. The population is 51.1% male and 48.9% female.
The population has grown 1.0% since 2010 (27,604 → 27,886).
Marshalltown city, IA Climate
Marshalltown city, IA has an average annual temperature of 8.8°C (48°F) and receives about 868 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
8.8°C
Avg Temp
868
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -8° / 17° | 24 mm |
| February | -5° / 24° | 27 mm |
| March | 2° / 36° | 57 mm |
| April | 9° / 49° | 82 mm |
| May | 16° / 60° | 104 mm |
| June | 21° / 70° | 118 mm |
| July | 23° / 74° | 105 mm |
| August | 22° / 71° | 113 mm |
| September | 17° / 63° | 94 mm |
| October | 11° / 51° | 66 mm |
| November | 2° / 36° | 46 mm |
| December | -5° / 23° | 32 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Marshalltown city, IA
The most comfortable months to visit Marshalltown city, IA are typically June, August and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -13°C low). June is usually the wettest month.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.