Knoxville

County:: Marion County
County Seat:: Yes
Area (mi²):: 4.618
State:: Iowa

Knoxville is a city located in Marion County, Iowa. Knoxville has a 2025 population of 7,340. It is also the county seat of Marion County. Knoxville is currently declining at a rate of -0.62% annually and its population has decreased by -3.04% since the most recent census, which recorded a population of 7,570 in 2020.

The average household income in Knoxville is $88,037 with a poverty rate of 9.01%. The median age in Knoxville is 42.2 years: 42.9 years for males, and 40.8 years for females.

Demographics

The racial composition of Knoxville includes 94.63% White, and smaller percentages for Asian, Black or African American, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Other race

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	7,091	94.63%
Two or more races	268	3.58%
Asian	76	1.01%
Black or African American	34	0.45%
Other race	15	0.2%
Native Hawaiian or Pacific Islander	7	0.09%
Native American	2	0.03%

Knoxville Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Knoxville's average per capita income is $47,154. Household income levels show a median of $70,136. The poverty rate stands at 9.01%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$95,641	-
Families	$81,042	$105,475
Households	$70,136	$88,037
Non Families	$32,239	$57,017

$47,154

Average Income

$70,136

Median Household Income

9.01%

Poverty Rate