Total Population in O'Brien County, IA
ACS 2024 5-Year Estimates
How O'Brien County Compares
National Distribution
Where O'Brien County falls among all 3,222 U.S. counties for total population.
■ O'Brien County: 14,126
Ranking Context
| Rank | County | Value |
|---|---|---|
| #2,212 | Rusk County, WI | 14,179 |
| #2,213 | Smith County, MS | 14,132 |
| #2,214 | Screven County, GA | 14,130 |
| #2,215 | O'Brien County, IA | 14,126 |
| #2,216 | Allamakee County, IA | 14,092 |
| #2,217 | Price County, WI | 14,092 |
| #2,218 | Wetzel County, WV | 14,078 |
Total Population in O'Brien County, Iowa
O'Brien County, Iowa has a total population of 14,126, which ranks #2,215 of 3,222 out of 3,222 counties nationwide. This is 100.0% below the national value of 330M.
Within Iowa, O'Brien County ranks #56 of 99 out of 99 counties. This places it in the 31th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.