Knoxville, Iowa Demographics & Population 2026
During the 2020–2024 ACS period, Knoxville, Iowa had a total population of 7,473, the 54th largest city in Iowa, with a median household income of $61,599, which is 18% lower than the state average. The poverty rate is 12.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Knoxville Quick Facts
How Knoxville Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 7,493 | 7,473 | -0.3% |
| Median household income | $70,136 | $61,599 | -12.2% |
| Median home value | $147,600 | $160,300 | +8.6% |
How Knoxville Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 31 | National average: 61
Education
Educational Attainment (Adults 25+)
Knoxville Rankings in Iowa
Explore Iowa Rankings
Other Cities in Marion County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Pella | 10,720 | $84,111 | 5.9% | $292,700 |
| Pleasantville | 1,899 | $67,614 | 4.1% | $168,300 |
| Melcher-Dallas | 1,176 | $58,611 | 13.6% | $99,800 |
| Bussey | 414 | $43,125 | 15.0% | $79,000 |
| Harvey | 174 | $52,250 | 9.2% | $77,500 |
| Hamilton | 107 | $63,750 | 19.6% | $70,000 |
| Marysville | 70 | N/A | 4.3% | $205,000 |
| Swan | 55 | N/A | 10.9% | N/A |
Cities Similar to Knoxville
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Decorah | 7,535 | $64,366 | $244,500 | 42.2% | 8.1% |
| Charles City | 7,232 | $59,180 | $115,400 | 12.8% | 13.3% |
| Webster City | 7,769 | $63,430 | $127,200 | 23.2% | 8.6% |
| Hiawatha | 7,206 | $66,270 | $216,900 | 32.4% | 13.7% |
| Washington | 7,290 | $55,373 | $152,300 | 23.6% | 12.8% |
Population Overview
Knoxville is a small city located in Iowa, within Marion County. The total population is 7,473. It ranks as the 54th most populous out of 1,017 Census-designated places in Iowa.
Age Demographics
The median age in Knoxville is 42.2 years. This is 9% higher than the state median of 38.6 years. 13.1% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Knoxville is $61,599. This is 18% lower than the state median of $75,059. It is also 24% lower than the national median of $80,734. The poverty rate stands at 12.5%. This is 12% higher than the state poverty rate of 11.1%. The unemployment rate is 4.8%. This is 33% higher than the state rate of 3.6%. The median home value is $160,300. Housing costs are 23% lower than the state median of $208,000. With a home-value-to-income ratio of just 2.6x, Knoxville is one of the most affordable housing markets in the area. 75.9% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 71.7%.
Race & Ethnicity
Knoxville has a predominantly White (non-Hispanic) population, comprising 93.0% of all residents. Hispanic or Latino residents account for 1.9%. The Black or African American population (0.3%) is well below the state average of 3.8%. The Hispanic or Latino population (1.9%) is well below the state average of 7.3%.
Education
30.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 3% lower than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.9%.
Data Sources & Methodology
All demographic data for Knoxville, Iowa is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,017 Census-designated places in Iowa. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Knoxville, Iowa?
Knoxville, Iowa has a population of 7,473 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Knoxville, IA?
The median household income in Knoxville is $61,599, which is 24% lower than the national median of $80,734.
What is the poverty rate in Knoxville, IA?
The poverty rate in Knoxville is 12.5%. This means approximately 907 residents live below the federal poverty line.
What is the racial makeup of Knoxville, Iowa?
Knoxville's population is 93.0% White, 0.3% Black, 1.9% Hispanic/Latino, and 1.5% Asian.
What is the median home value in Knoxville, IA?
The median home value in Knoxville is $160,300. The home-value-to-income ratio is 2.6x.
How educated is Knoxville, Iowa?
30.6% of adults (25+) in Knoxville hold a bachelor's degree or higher, and 8.5% hold a graduate or professional degree.