Sioux City, Iowa

Sioux City population, 2020 to 2024

Sioux City added 987 residents from July 2020 to July 2024, a change of +1.1%. In the latest year it moved by +591. Among 85 Iowa places of 5,000 or more, that growth ranks 42nd; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Sioux City is 9.1 times that size.

Sioux City covers 59.15 square miles of land and 1.17 of water, for 1,469 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Sioux City is close to the typical town.

The 2 counties Sioux City spans

Sioux City crosses county lines. The Census county-part estimates split its 86,875 residents as follows; Woodbury County holds 100.0% of them. The shaded shapes are on the map above; dots mark the eight nearest places.

ZIP codes in Sioux City

8 ZIP Code Tabulation Areas (ZCTAs) overlap Sioux City by at least 10% of the ZCTA's or the city's land: 51101, 51103, 51104, 51105, 51106, 51108, 51109, 51111. 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 Sioux City is

The Census internal point of Sioux City is at 42.495400, -96.389500. Des Moines, the capital, is 156.0 miles ESE in a straight line. The nearest larger place is Sioux Falls, SD (209,289 people), 74.3 miles away.

Daylight in Sioux City

At 42.50° N, Sioux City gets about 15 h 18 min of daylight around the June solstice and 9 h 04 min around the December solstice, a swing of 6 h 14 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Sioux City

The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Sergeant Bluff, 7.0 miles away, with 5,335 people.