Ranking of Obrien, IA Cities and Places By population in 2021
Updated on June 27, 2025.
Based on the US Census Vintage data estimates, in 2021, among all Obrien, IA cities and places, Sheldon city (pt.) had the highest population (5.21K), followed by Balance of O'Brien County (3.11K), and Hartley city (1.58K).
The chart below shows the top 9 cities and places, and the table below shows the ranking of all Obrien cities and places.
You can see similar information for other Iowa counties. You can also see the ranking of all cities and places in Iowa.
Data Source: US Census Bureau (Vintage).
Ranking of Obrien, IA Cities and Places By population in 2021
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| Rank | City or Place | Population |
|---|---|---|
| 1 | Sheldon city (pt.) | 5211 |
| 2 | Balance of O'Brien County | 3110 |
| 3 | Hartley city | 1580 |
| 4 | Sanborn city | 1403 |
| 5 | Paullina city | 968 |
| 6 | Primghar city | 898 |
| 7 | Sutherland city | 620 |
| 8 | Calumet city | 144 |
| 9 | Archer city | 114 |