Polk City, Iowa Population 2021

5,319
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Polk City is a city located in Polk County Iowa. With a 2020 population of 5,319, it is the 76th largest city in Iowa and the 4599th largest city in the United States . Polk City is currently growing at a rate of 3.48% annually and its population has increased by 55.62% since the most recent census, which recorded a population of 3,418 in 2010. Polk City reached it's highest population of in . Spanning over 5 miles, Polk City has a population density of 1,044 people per square mile.

The average household income in Polk City is $118,644 with a poverty rate of 2.25%. The median rental costs in recent years comes to $1,152 per month, and the median house value is $249,000. The median age in Polk City is 33.9 years, 31.7 years for males, and 35.4 years for females.

Polk City Demographics

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

  • White: 98.31%
  • Two or more races: 0.86%
  • Black or African American: 0.45%
  • Other race: 0.37%
  • Native American: 0.00%
  • Asian: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Polk City, Iowa is 5,319 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 4,961.The last official US Census in 2010 recorded the population at 3,418.

Polk City, Iowa Population 2021

Population by Race

Race Population Percentage
White4,54798.31%
Two or More Races400.86%
Black or African American210.45%
Some Other Race170.37%
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Polk City Population by Race

Polk City Population Pyramid $2021

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Polk City Median Age

33.9


Total

31.7


Male

35.4


Female

Polk City Adults

There are 3,024 adults, (356 of whom are seniors) in Polk City.

Polk City Age Dependency

73.4

Age Dependency Ratio

13.3

Old Age Dependency Ratio

60

Child Dependency Ratio

Polk City Sex Ratio

Female

2,157

46.64%

Male

2,468

53.36%

Polk City Population by Age

Polk City Renter vs Owner Occupied by Household Type

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Polk City Household Types

Type Owner Renter
Male11.4%88.6%
All83.5%16.5%
Married88%12%
Non Family95.5%4.5%
Female100%0%

83.5%

Rate of Home Ownership

Polk City Households and Families

Type Count Average Size Owned
All1,4643.1283.5
Married1,0763.3288
Non Family2421.4895.5
Male1143.4111.4
Female327.97100

3.27

Average Family Size

3.12

Average Household Size

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Polk City Households by Type

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Education Attained Count Percentage
Less Than 9th Grade140.48%
9th to 12th Grade140.48%
High School Graduate54618.87%
Some College58220.12%
Associates Degree43114.90%
Bachelors Degree97433.67%
Graduate Degree33211.48%
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Polk City Educational Attainment by Sex (over 25)

Polk City Educational Attainment by Race

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Race Total High School Bachelors
White2,8242,7961,287
2+ Races40408
Black212111
Hispanic88
Other Race88

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

The highest rate of bachelors degrees is among black people with a rate of 52.38%.

Polk City Educational Attainment by Race

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Name Average Male Female
Overall$55,288$68,370$49,840
Less Than 9th Grade$$$
High School Graduate$51,528$52,750$40,250
Some College$51,574$54,529$30,521
Bachelors Degree$75,333$93,221$55,438
Graduate Degree$76,392$91,719$67,266

$55,288

Average Earnings

$68,370

Average Male

$49,840

Average Female

Polk City Earnings by Educational Attainment

Polk City Language by Age

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Polk City Language

99.10% of Polk City residents speak only English, while 0.90% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.90% of the population.

Polk City Language

Polk City Poverty by Race

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2.25%

Overall Poverty Rate

0.00%

Male Poverty Rate

4.82%

Female Poverty Rate

Poverty in Polk City

The race most likely to be in poverty in Polk City is White, with 2.28% below the poverty level.

The race least likely to be in poverty in Polk City is White, with 2.28% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.00%. Among those working part-time, it was 16.14%, and for those that did not work, the poverty rate was 0.00%.

Polk City Poverty

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Name Poverty
Bachelors or Greater5.71%
Some College0.00%
High School0.00%
Less Than 9th Grade0.00%

Polk City Poverty Rate by Education

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Rate Poverty
Female Unemployed0.00%
Female Employed9.37%
Male Unemployed0.00%
Male Employed0.00%

Polk City Poverty Rate by Employment Status and Sex

Polk City Income by Household Type

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Name Median Mean
Households$104,750$118,644
Families$105,750$116,120
Married Families$113,200-
Non Families-$119,467
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Income by Household Type

Polk City Marital Status

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Marriage Rates

68.8%

Overall Marriage Rate

70.1%

Male Marriage Rate

67.4%

Female Marriage Rate

Polk City Married by Age and Sex

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Polk City Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Polk City Marital Status by Race

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Polk City Marital Status

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239

Number of Veterans

239

Male Veterans

Female Veterans

War Veterans
Vietnam111
Second Gulf War87
First Gulf War33
World War II
Korea

Polk City Veterans by War

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Age Group Veterans
18 to 3469
65 to 7455
55 to 6444
75+41
35 to 5430

Polk City Veterans by Age

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Polk City Veterans by Race

Polk City Veterans by Education

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0.00%

Veteran Poverty Rate

20.08%

Veteran Disability Rate

Polk City Veterans by Education

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78.6%

Labor Force Participation

77.3%

Employment Rate

1.7%

Unemployment Rate

Polk City Employment by Age

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Polk City Employment by Race

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Polk 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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82.51%

Born in Polk City

99.42%

Native Born

0.58%

Foreign Born

0.00%

Non Citizen

0.58%

Naturalized

Place of Birth

99.42% of Polk City residents were born in the United States, with 82.51% having been born in Iowa. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Polk City Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20215,3191793.48%
20205,1401793.61%
20194,9611793.74%
20184,7821573.39%
20174,6251884.24%
20164,4371042.40%
20154,3331503.59%
20144,1832205.55%
20133,9632596.99%
20123,7041464.10%
20113,5581063.07%
20103,4520.00%

Polk City Population by Year