City in Marion County, Iowa · 4.6 sq mi · 1,611 people per sq mi
7,439 people live in Knoxville. The typical household earns $61,599, and the median resident is 42.2 years old.
2026 projection
From 7,595 in 2020
Poverty rate 12.46%
Men 42.4 · Women 41.7
1860–2026
7,439
2026 projection
2.1% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1860–2026
7,439
2026 projection
2.1% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 7,439 | -30 | 0.40% |
|---|---|---|---|
| 2025 | 7,469 | +6 | 0.08% |
| 2024 | 7,463 | +25 | 0.34% |
| 2023 | 7,438 | 0 | 0.00% |
| 2022 | 7,438 | -48 | 0.64% |
| 2021 | 7,486 | -109 | 1.44% |
| 2020 | 7,595 | -18 | 0.24% |
| 2019 | 7,613 | +20 | 0.26% |
| 2018 | 7,593 | +66 | 0.88% |
| 2017 | 7,527 | +20 | 0.27% |
Showing 10 of 32 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Knoxville has a population change lower than Marion County, Iowa, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 75 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 8 residents
55% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 55% | 56% | 53% |
| Never married | 25% | 31% | 19% |
| Divorced | 14% | 10% | 18% |
| Widowed | 6% | 2% | 9% |
| Separated | 1% | 1% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources