Mason City Population

2010–2026

149

2026 projection

1.4% since 2020 (increase)

050100150200201020122014201620182020202220242026

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Mason City. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202614900.00%
2025149+10.68%
2024148-10.67%
2023149+10.68%
2022148-10.67%
2021149+21.36%
2020147-2514.53%
2019172+10.58%
2018171-31.72%
2017174+31.75%

Showing 10 of 17 years.

Mason City Demographics

27.9median age

Median age

Female26.6 yrs
Male34.2 yrs

Adults

145
35 seniors · 24%110 other adults

Sex

Female 42.3% · 80Male 57.7% · 109

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 2 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Mason City Income

$64,375median household income

Median household income

$64,375

Half of households earn more, half earn less

Median earnings

$50,250

Typical yearly pay for a worker 25 or older.

Poverty rate

11.1%

About 1 in 9 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Mason City Marital Status

65% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married65%60%71%
Never married22%21%24%
Divorced11%16%5%
Widowed<1%1%0%
Separated1%2%0%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201