Knoxville, Iowa Population 2021

7,116
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Knoxville is a city located in Marion County Iowa. It is also the county seat of Marion County. With a 2020 population of 7,116, it is the 58th largest city in Iowa and the 3925th largest city in the United States . Knoxville is currently declining at a rate of -0.36% annually and its population has decreased by -2.69% since the most recent census, which recorded a population of 7,313 in 2010. Knoxville reached it's highest population of in . Spanning over 5 miles, Knoxville has a population density of 1,538 people per square mile.

The average household income in Knoxville is $59,488 with a poverty rate of 14.93%. The median rental costs in recent years comes to $672 per month, and the median house value is $95,100. The median age in Knoxville is 40.9 years, 40.5 years for males, and 42.1 years for females.

Knoxville Demographics

According to the most recent ACS, the racial composition of Knoxvillewas:

  • White: 95.62%
  • Two or more races: 2.20%
  • Black or African American: 0.64%
  • Asian: 0.54%
  • Other race: 0.50%
  • Native American: 0.40%
  • Native Hawaiian or Pacific Islander: 0.10%
The current population of Knoxville, Iowa is 7,116 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 7,168.The last official US Census in 2010 recorded the population at 7,313.

Knoxville, Iowa Population 2021

Population by Race

Race Population Percentage
White6,87795.62%
Two or More Races1582.20%
Black or African American460.64%
Asian390.54%
Some Other Race360.50%
American Indian and Alaska Native290.40%
Native Hawaiian and Other Pacific Islander70.10%
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Knoxville Population by Race

Knoxville Population Pyramid $2021

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Knoxville Median Age

40.9


Total

40.5


Male

42.1


Female

Knoxville Adults

There are 5,707 adults, (1,425 of whom are seniors) in Knoxville.

Knoxville Age Dependency

68

Age Dependency Ratio

33.3

Old Age Dependency Ratio

34.7

Child Dependency Ratio

Knoxville Sex Ratio

Female

3,899

54.21%

Male

3,293

45.79%

Knoxville Population by Age

Knoxville Renter vs Owner Occupied by Household Type

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Knoxville Household Types

Type Owner Renter
Non Family42.1%57.9%
Male49.7%50.3%
Female57.1%42.9%
All58.1%41.9%
Married77.5%22.5%

58.1%

Rate of Home Ownership

Knoxville Households and Families

Type Count Average Size Owned
All3,3202.1158.1
Non Family1,4721.2342.1
Married1,3042.977.5
Female3992.4657.1
Male1452.9649.7

2.75

Average Family Size

2.11

Average Household Size

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Knoxville Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1312.55%
9th to 12th Grade3055.93%
High School Graduate1,94337.77%
Some College1,57830.68%
Associates Degree4218.18%
Bachelors Degree4198.15%
Graduate Degree3476.75%
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Knoxville Educational Attainment by Sex (over 25)

Knoxville Educational Attainment by Race

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Race Total High School Bachelors
White4,8424,429683
Hispanic169152
2+ Races59565
Asian393939
Other Race3636
Native American29263
Black292929
Islander777

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 100.00%.

Knoxville Educational Attainment by Race

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Name Average Male Female
Overall$38,779$50,153$29,223
Less Than 9th Grade$$51,250$
High School Graduate$36,171$47,031$22,875
Some College$31,741$42,679$26,685
Bachelors Degree$51,696$52,679$50,972
Graduate Degree$56,402$57,219$55,847

$38,779

Average Earnings

$50,153

Average Male

$29,223

Average Female

Knoxville Earnings by Educational Attainment

Knoxville Language by Age

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Knoxville Language

95.54% of Knoxville residents speak only English, while 4.46% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.20% of the population.

Knoxville Language

Knoxville Poverty by Race

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Name Total In Poverty Poverty Rate
White6,62493114.05%
Hispanic2239643.05%
Other3636100.00%
Native291655.17%
Asian39615.38%
Multiple15521.29%

14.93%

Overall Poverty Rate

11.44%

Male Poverty Rate

17.90%

Female Poverty Rate

Poverty in Knoxville

The race most likely to be in poverty in Knoxville is Other, with 100.00% below the poverty level.

The race least likely to be in poverty in Knoxville is Multiple, with 1.29% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.74%. Among those working part-time, it was 14.79%, and for those that did not work, the poverty rate was 31.66%.

Knoxville Poverty

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Name Poverty
Less Than 9th Grade26.98%
High School20.45%
Some College15.36%
Bachelors or Greater2.89%

Knoxville Poverty Rate by Education

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Rate Poverty
Female Unemployed35.29%
Male Unemployed15.22%
Female Employed7.97%
Male Employed3.29%

Knoxville Poverty Rate by Employment Status and Sex

Knoxville Income by Household Type

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Name Median Mean
Households$47,844$59,488
Families$60,925$71,433
Married Families$75,425-
Non Families$26,544$42,476
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Income by Household Type

Knoxville Marital Status

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Marriage Rates

46.0%

Overall Marriage Rate

51.0%

Male Marriage Rate

41.9%

Female Marriage Rate

Knoxville Married by Age and Sex

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Knoxville Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.

Knoxville Marital Status by Race

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Knoxville Marital Status

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546

Number of Veterans

510

Male Veterans

36

Female Veterans

War Veterans
Vietnam208
Korea81
Second Gulf War71
First Gulf War64
World War II41

Knoxville Veterans by War

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Age Group Veterans
65 to 74159
75+148
55 to 64132
35 to 5488
18 to 3419

Knoxville Veterans by Age

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Name Veterans % of Total
White5369.75%
Native American1034.48%

Knoxville Veterans by Race

Knoxville Veterans by Education

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14.42%

Veteran Poverty Rate

48.77%

Veteran Disability Rate

Knoxville Veterans by Education

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61.7%

Labor Force Participation

60.1%

Employment Rate

2.7%

Unemployment Rate

Knoxville Employment by Age

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Knoxville Employment by Race

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Knoxville 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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77.22%

Born in Knoxville

98.14%

Native Born

1.86%

Foreign Born

0.36%

Non Citizen

1.50%

Naturalized

Place of Birth

98.14% of Knoxville residents were born in the United States, with 77.22% having been born in Iowa. 0.36% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Knoxville Place of Birth

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20217,116-26-0.36%
20207,142-26-0.36%
20197,168-26-0.36%
20187,194230.32%
20177,171-31-0.43%
20167,202-38-0.52%
20157,240510.71%
20147,189110.15%
20137,178-73-1.01%
20127,251-31-0.43%
20117,282-9-0.12%
20107,291-440-0.58%
20007,731-501-0.63%
19908,232890.11%
19808,1433880.49%
19707,755-62-0.08%
19607,8171920.25%
19507,6256890.95%
19406,9362,2393.97%
19304,6971,1742.92%
19203,5233331.00%
19103,190590.19%
19003,1314991.75%
18902,632550.21%
18802,5770.00%

Knoxville Population by Year