Mason City, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Mason City, Iowa is 27,135 as of the 2023 American Community Survey, making it the 17th-largest city in Iowa. The median household income is $62,369, the median home value is $130,000, and the median age is 43.0.
The population has declined 3.9% since 2010 (28,041 → 26,948).
27,135
Population
962
People / sq mi
$62,369
Median Income
$130,000
Median Home Value
Get Mason City's next ACS population data
Subscribe for Population Review updates by email. No spam, unsubscribe anytime.
Mason City covers 28.2 sq mi of land at 962 people per square mile.
About Mason City, IA
Housing cost is the defining feature of Mason City: the median home is valued at $130,000. With 27,135 residents, Mason City is a city in Iowa. It ranks #17 among cities in Iowa by population.
Incomes run on the lower side: a median household income of $62,369, below the US median of $78,538. The poverty rate is 7.3%, below the national 12.4%. Real estate is inexpensive, with a typical home worth only $130,000, with typical rent around $874.
Fewer adults hold degrees here than in most comparable places — 21.3%, below the national 35.0%. Most workers commute: only 5.4% work from home, below the national 14.0%, and the average commute runs about 14 minutes each way.
Mason City city Population History (2010-2024)
The city of Mason City city had a population of 28,041 in 2010 and 26,948 in 2024, a -3.9% growth over 14 years. The peak was 28,041 in 2010. Average annual growth rate: -0.28%.
26,948
Population (2024)
28,041
Population (2010)
28,041
Peak (2010)
-0.28%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 28,041 |
| 2011 | 27,947 |
| 2012 | 27,750 |
| 2013 | 27,664 |
| 2014 | 27,416 |
| 2015 | 27,311 |
| 2016 | 27,401 |
| 2017 | 27,339 |
| 2018 | 27,067 |
| 2019 | 26,931 |
| 2020 | 27,280 |
| 2021 | 27,180 |
| 2022 | 26,909 |
| 2023 | 26,954 |
| 2024 | 26,948 |
Race & Ethnicity
| White | 88.4% |
| Black or African American | 3.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Economy & Income
$62,369
Median Household Income
$36,527
Per Capita Income
7.3%
Poverty Rate
1.9%
Unemployment Rate
Housing
$130,000
Median Home Value
$874
Median Rent
67.6%
Owner-Occupied
Education
93.3%
High School+
21.3%
Bachelor's+
Commute
0.7%
Drive Alone
79.1%
Public Transit
5.4%
Work From Home
13.8 min
Avg Commute
Community Profile
21.4%
Foreign Born
95.6%
Non-English at Home
7.5%
Veterans
14.3%
With Disability
95.6%
Health Insurance
92.9%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 23.4% |
| Manufacturing | 16.1% |
| Education, Health Care & Social Services | 9.5% |
| Finance, Insurance & Real Estate | 6.5% |
| Construction | 4.8% |
| Information | 4.2% |
| Retail Trade | 4.1% |
| Arts, Entertainment & Food Services | 4.1% |
| Public Administration | 2.7% |
| Transportation & Warehousing | 2.0% |
| Agriculture & Mining | 1.1% |
Largest cities in Iowa
Largest counties in Iowa
Part of Iowa
Metro areas in Iowa
City rankings
Frequently Asked Questions
Mason City, Iowa has a population of 27,135 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 17th-largest city in Iowa.
The median household income in Mason City, Iowa is $62,369, with 7.3% of residents living below the federal poverty level.
The median home value in Mason City, Iowa is $130,000, with median monthly rent at $874 and a homeownership rate of 67.6%.
The median age in Mason City, Iowa is 43.0 years. The population is 48.9% male and 51.1% female.
The population has declined 3.9% since 2010 (28,041 → 26,948).
Where to stay in Mason City
Visiting or relocating to Mason City, IA? Compare hotels and short-term rentals across the metro — live availability and prices.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
More from Iowa
Population 212,464
Population 136,859
Population 101,083
Population 85,651
Population 75,264
Full rankings of Iowa cities by population
Statewide data for Iowa
Population, race, income, age, and trends across Iowa
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.