Mason City, IA
2025 and 2035 projected population

Ever wonder how many people live in Mason City, IA and how fast that number changes?

Aterio data team has developed an AI enhanced model that helps organizations understand the forecasted growth of population in Mason City, IA for years 2025 through 2035.

Population Growth Rate (Year over Year)

25,50026,00026,50027,00027,500-1.00%-0.80%-0.60%-0.40%-0.20%0.00%0.20%2020202120222023202420252026202720282029203020312032203320342035

2020

Population

27,351

Growth

0.00%

2021

Population

27,180

Growth

-0.63%

2022

Population

26,909

Growth

-1.00%

2023

Population

26,954

Growth

0.17%

2024

Population

26,948

Growth

-0.02%

2025

Population

26,872

Growth

-0.28%

2026

Population

26,803

Growth

-0.26%

2027

Population

26,728

Growth

-0.28%

2028

Population

26,660

Growth

-0.25%

2029

Population

26,605

Growth

-0.21%

2030

Population

26,548

Growth

-0.21%

2031

Population

26,430

Growth

-0.45%

2032

Population

26,303

Growth

-0.48%

2033

Population

26,181

Growth

-0.47%

2034

Population

26,062

Growth

-0.45%

2035

Population

25,943

Growth

-0.46%

Last update at Tue Jun 30 2026

Zip code level csv report on population forecast and economic development in Mason City, IA

Our team has created a comprehensive report on population forecast and economic development by zip code using our proprietary AI models.

Top 25 most populated zip codes in Mason City, IA

Our model provides a detailed 2025 through 2035 projected population growth for every zip code in Mason City, IA.

U.S. Zip code

2020 census

2025 population

2030 population

Open
5040128,64728,70728,361View full zip code report, 50401

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