Knoxville, Iowa

Knoxville population, 2020 to 2024

Knoxville lost 134 residents from July 2020 to July 2024, a change of -1.8%. In the latest year it moved by +18. Among 85 Iowa places of 5,000 or more, that growth ranks 75th; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Knoxville is 78% of it.

Knoxville covers 4.62 square miles of land, for 1,610 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Knoxville is denser than the typical town.

What county Knoxville is in

All of Knoxville's residents live in Marion County, which had 34,048 residents in 2024. Knoxville holds 21.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Knoxville

1 ZIP Code Tabulation Area (ZCTA) overlaps Knoxville by at least 10% of the ZCTA's or the city's land: 50138. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Knoxville is

The Census internal point of Knoxville is at 41.318500, -93.102600. Des Moines, the capital, is 32.1 miles NW in a straight line. The nearest larger place is Pella, IA (10,965 people), 11.3 miles away. The nearest city of 100,000 or more is Des Moines, IA, 31.6 miles away.

Daylight in Knoxville

At 41.32° N, Knoxville gets about 15 h 10 min of daylight around the June solstice and 9 h 11 min around the December solstice, a swing of 5 h 58 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Knoxville

The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Melcher-Dallas, 9.6 miles away, with 1,193 people.