Ottumwa, Iowa

Ottumwa population, 2020 to 2024

Ottumwa added 189 residents from July 2020 to July 2024, a change of +0.7%. In the latest year it moved by +210. Among 85 Iowa places of 5,000 or more, that growth ranks 45th; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Ottumwa is 2.7 times that size.

Ottumwa covers 16.06 square miles of land and 0.67 of water, for 1,597 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Ottumwa is denser than the typical town.

What county Ottumwa is in

All of Ottumwa's residents live in Wapello County, which had 35,681 residents in 2024. Ottumwa holds 71.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Ottumwa

1 ZIP Code Tabulation Area (ZCTA) overlaps Ottumwa by at least 10% of the ZCTA's or the city's land: 52501. 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 Ottumwa is

The Census internal point of Ottumwa is at 41.022300, -92.423300. Des Moines, the capital, is 72.8 miles WNW in a straight line. The nearest larger place is Iowa City, IA (76,710 people), 63.7 miles away. The nearest city of 100,000 or more is Des Moines, IA, 72.4 miles away.

Daylight in Ottumwa

At 41.02° N, Ottumwa gets about 15 h 08 min of daylight around the June solstice and 9 h 13 min around the December solstice, a swing of 5 h 55 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Ottumwa

The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Bloomfield, 18.9 miles away, with 2,773 people.