Osceola County, Iowa Cities (2026)

5 cities

City
Rank
2026 Pop. ↓
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Sibley12,7492,863-0.69%1,5392 City
Ashton2426450-0.93%3811 City
Ocheyedan3416439-0.95%3671 City
Melvin4193201-0.52%1,1910 City
Harris5142150-0.7%1421 City

Osceola County Cities Summary

Largest City

Sibley is the largest city in Osceola County, with a population of 2,749.

Smallest City

Harris is the smallest city in Osceola County, with a population of 142.

10 Largest Cities

There are 5 cities in Osceola County, Iowa.

Location of Osceola County