Mason City, Iowa Population 2021

26,659
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Mason City is a city located in Cerro Gordo County Iowa. It is also the county seat of Cerro Gordo County. With a 2020 population of 26,659, it is the 17th largest city in Iowa and the 1449th largest city in the United States . Mason City is currently declining at a rate of -0.51% annually and its population has decreased by -5.06% since the most recent census, which recorded a population of 28,079 in 2010. Mason City reached it's highest population of in . Spanning over 28 miles, Mason City has a population density of 959 people per square mile.

The average household income in Mason City is $65,179 with a poverty rate of 11.93%. The median rental costs in recent years comes to $723 per month, and the median house value is $114,900. The median age in Mason City is 43.3 years, 39.7 years for males, and 45.2 years for females.

Mason City Demographics

According to the most recent ACS, the racial composition of Mason Citywas:

  • White: 93.17%
  • Two or more races: 2.46%
  • Black or African American: 2.44%
  • Asian: 0.71%
  • Native American: 0.55%
  • Other race: 0.52%
  • Native Hawaiian or Pacific Islander: 0.16%
The current population of Mason City, Iowa is 26,659 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 26,931.The last official US Census in 2010 recorded the population at 28,079.

Mason City, Iowa Population 2021

2020 and 2021 population is estimated by projecting the 2019 numbers.

Year Population Growth Growth Rate
202149,383-224-0.45%
202049,607-224-0.45%
201949,831-224-0.45%
201850,055-399-0.80%
201750,454-113-0.22%
201650,567810.16%
201550,486-277-0.55%
201450,763-254-0.50%
201351,017-178-0.35%
201251,195-337-0.66%
201151,532-148-0.29%
201051,6800.00%

Mason City Metro Area Population by Year

Population by Race

Race Population Percentage
White25,34293.17%
Two or More Races6692.46%
Black or African American6632.44%
Asian1920.71%
American Indian and Alaska Native1500.55%
Some Other Race1410.52%
Native Hawaiian and Other Pacific Islander430.16%
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Mason City Population by Race

Mason City Population Pyramid $2021

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Mason City Median Age

43.3


Total

39.7


Male

45.2


Female

Mason City Adults

There are 21,683 adults, (5,674 of whom are seniors) in Mason City.

Mason City Age Dependency

69.9

Age Dependency Ratio

35.4

Old Age Dependency Ratio

34.5

Child Dependency Ratio

Mason City Sex Ratio

Female

13,988

51.43%

Male

13,212

48.57%

Mason City Population by Age

Mason City Renter vs Owner Occupied by Household Type

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Mason City Household Types

Type Owner Renter
Female32.2%67.8%
Male51.5%48.5%
Non Family52%48%
All64.3%35.7%
Married88.7%11.3%

64.3%

Rate of Home Ownership

Mason City Households and Families

Type Count Average Size Owned
All12,5462.164.3
Non Family5,5131.1452
Married4,9862.8288.7
Female1,4412.8632.2
Male6063.0351.5

2.75

Average Family Size

2.1

Average Household Size

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Mason City Households by Type

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Education Attained Count Percentage
Less Than 9th Grade5172.68%
9th to 12th Grade1,1656.04%
High School Graduate5,97931.00%
Some College4,53123.49%
Associates Degree2,99815.55%
Bachelors Degree2,70514.03%
Graduate Degree1,3907.21%
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Mason City Educational Attainment by Sex (over 25)

Mason City Educational Attainment by Race

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Race Total High School Bachelors
White17,63716,4693,775
Hispanic1,009590164
2+ Races34032842
Black24917017
Asian14714769
Native American1305846
Other Race1255831
Islander1313

The highest rate of high school graduation is among asian people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 46.94%.

Mason City Educational Attainment by Race

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Name Average Male Female
Overall$38,599$45,838$31,652
Less Than 9th Grade$24,783$38,205$16,164
High School Graduate$32,065$35,739$25,298
Some College$39,640$49,361$32,029
Bachelors Degree$48,125$57,353$37,832
Graduate Degree$67,851$71,520$60,278

$38,599

Average Earnings

$45,838

Average Male

$31,652

Average Female

Mason City Earnings by Educational Attainment

Mason City Language by Age

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Mason City Language

95.80% of Mason City residents speak only English, while 4.20% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.71% of the population.

Mason City Language

Mason City Poverty by Race

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Name Total In Poverty Poverty Rate
White23,4902,3149.85%
Hispanic1,69448128.39%
Black59632855.03%
Multiple62512419.84%
Native1509764.67%
Other1342014.93%

11.93%

Overall Poverty Rate

9.19%

Male Poverty Rate

14.52%

Female Poverty Rate

Poverty in Mason City

The race most likely to be in poverty in Mason City is Native, with 64.67% below the poverty level.

The race least likely to be in poverty in Mason City is White, with 9.85% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.25%. Among those working part-time, it was 19.86%, and for those that did not work, the poverty rate was 18.64%.

Mason City Poverty

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Name Poverty
Less Than 9th Grade19.95%
High School14.00%
Some College9.61%
Bachelors or Greater4.24%

Mason City Poverty Rate by Education

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Rate Poverty
Female Unemployed38.70%
Male Unemployed24.48%
Female Employed7.66%
Male Employed4.72%

Mason City Poverty Rate by Employment Status and Sex

Mason City Income by Household Type

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Name Median Mean
Households$50,397$65,179
Families$67,263$77,961
Married Families$80,145-
Non Families$32,724$44,063
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Income by Household Type

Mason City Marital Status

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Marriage Rates

46.3%

Overall Marriage Rate

46.9%

Male Marriage Rate

45.8%

Female Marriage Rate

Mason City Married by Age and Sex

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Mason City Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Mason City Marital Status by Race

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Mason City Marital Status

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1,811

Number of Veterans

1,764

Male Veterans

47

Female Veterans

War Veterans
Vietnam825
First Gulf War372
Korea200
Second Gulf War146
World War II33

Mason City Veterans by War

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Age Group Veterans
75+601
65 to 74524
55 to 64324
35 to 54303
18 to 3459

Mason City Veterans by Age

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Name Veterans % of Total
White1,7878.76%
Hispanic767.17%
2+ Races153.86%
Black51.24%
Native American43.08%

Mason City Veterans by Race

Mason City Veterans by Education

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8.73%

Veteran Poverty Rate

24.38%

Veteran Disability Rate

Mason City Veterans by Education

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66.4%

Labor Force Participation

62.9%

Employment Rate

5.1%

Unemployment Rate

Mason City Employment by Age

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Mason City Employment by Race

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Mason City Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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73.42%

Born in Mason City

97.63%

Native Born

2.38%

Foreign Born

1.42%

Non Citizen

0.95%

Naturalized

Place of Birth

97.63% of Mason City residents were born in the United States, with 73.42% having been born in Iowa. 1.42% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Mason City Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
202126,659-136-0.51%
202026,795-136-0.50%
201926,931-136-0.50%
201827,067-272-0.99%
201727,339-62-0.23%
201627,401900.33%
201527,311-105-0.38%
201427,416-248-0.90%
201327,664-86-0.31%
201227,750-197-0.70%
201127,947-94-0.34%
201028,041-1,131-0.39%
200029,1721320.05%
199029,040-1,104-0.37%
198030,144-235-0.08%
197030,379-263-0.09%
196030,6422,6620.91%
195027,9809000.33%
194027,0803,7761.51%
193023,3043,2391.51%
192020,0658,8355.98%
191011,2304,4845.23%
19006,7462,7395.35%
18904,0071,4974.79%
18802,5100.00%

Mason City Population by Year